Temperature Sensors Posts

Resideo announced last week that due to a required component becoming obsolete, they are forced to discontinue the popular 5800FLOOD sensor. There is still some available stock, so Alarm Grid has not yet discontinued it, but once all stock has been exhausted, the 5800FLOOD is gone for good.

The 5800FLOOD is popular because unlike the 5821, it doesn't require that a water probe be added to the sensor. Water detection is built-in, and configuration is easy. Another benefit of the 5800FLOOD is that it will alert for flooding more quickly than the 5821. The prongs of the 5800FLOOD need only be in contact with water for about 25 seconds before a signal is sent to the alarm panel. The 5821 flood probe must be in contact with water for about three (3) minutes before sending a signal.

In addition to flood sensing, the 5800FLOOD also monitors for extreme cold and/or hot temperatures locally. This is done using a temperature sensor that is built into the 5800FLOOD. For cold temperature sensing, if the ambient temperature drops below 45℉ (7.2℃) for more than 15 minutes, an alert is sent using Loop 1. For high-temperature sensing, if the temperature rises above 95℉ (35℃) for more than 15 minutes, then an alert is sent using Loop 2. The flood sensor transmits using Loop 3.

Now that the 5800FLOOD is being discontinued, the Resideo and Honeywell Home 5821 is the recommended replacement. One drawback to the 5821 is that it requires a remote probe be added for flood sensing, and for freeze sensing. However, only one (1) remote probe can be used per transmitter, so if you need to monitor for both flood and freeze, two (2) 5821s are required.

The 5821 supports the following functions:

For flood sensing, we recommend using the FP280 as it includes wiring, and the required resistor is already in place. With the 470PB, the user is responsible for providing their own wire and must add the 2.2 MΩ resistor themselves. In all cases, wiring between the 5821 and whichever remote probe is used should be made as short as possible, and should not exceed 96" (243cm). Be sure to read the full Install Guide for the 5821 for all of its various quirks.

Supply chain shortages claim another victim in the 5800FLOOD. It seems like only yesterday that we were excitedly telling you about it. What are your thoughts on the demise of this "New and Improved" environmental sensor? Leave us a note in the comments, as we always love hearing from our readers.

Resideo announced last week that due to a required component becoming obsolete, they are forced to discontinue the popular 5800FLOOD sensor. There is still some available stock, so Alarm Grid has not yet discontinued it, but once all stock has been exhausted, the 5800FLOOD is gone for good.

The 5800FLOOD is popular because unlike the 5821, it doesn't require that a water probe be added to the sensor. Water detection is built-in, and configuration is easy. Another benefit of the 5800FLOOD is that it will alert for flooding more quickly than the 5821. The prongs of the 5800FLOOD need only be in contact with water for about 25 seconds before a signal is sent to the alarm panel. The 5821 flood probe must be in contact with water for about three (3) minutes before sending a signal.

In addition to flood sensing, the 5800FLOOD also monitors for extreme cold and/or hot temperatures locally. This is done using a temperature sensor that is built into the 5800FLOOD. For cold temperature sensing, if the ambient temperature drops below 45℉ (7.2℃) for more than 15 minutes, an alert is sent using Loop 1. For high-temperature sensing, if the temperature rises above 95℉ (35℃) for more than 15 minutes, then an alert is sent using Loop 2. The flood sensor transmits using Loop 3.

Now that the 5800FLOOD is being discontinued, the Resideo and Honeywell Home 5821 is the recommended replacement. One drawback to the 5821 is that it requires a remote probe be added for flood sensing, and for freeze sensing. However, only one (1) remote probe can be used per transmitter, so if you need to monitor for both flood and freeze, two (2) 5821s are required.

The 5821 supports the following functions:

For flood sensing, we recommend using the FP280 as it includes wiring, and the required resistor is already in place. With the 470PB, the user is responsible for providing their own wire and must add the 2.2 MΩ resistor themselves. In all cases, wiring between the 5821 and whichever remote probe is used should be made as short as possible, and should not exceed 96" (243cm). Be sure to read the full Install Guide for the 5821 for all of its various quirks.

Supply chain shortages claim another victim in the 5800FLOOD. It seems like only yesterday that we were excitedly telling you about it. What are your thoughts on the demise of this "New and Improved" environmental sensor? Leave us a note in the comments, as we always love hearing from our readers.

Welcome to the second Alarm Grid video recap of 2021. It has been awhile since our first recap of the year, but we really hope to make this a regular thing like it was before. Technical difficulties have slowed us down, but we're going to be back in the swing of things very soon!

Only two (2) new Alarm Grid videos were uploaded in the past week, both of them on Monday, February 15th. They cover the Alarm.com ADC-T2000 Thermostat and the DSC PG9905 Temperature Sensor, respectively. Both videos featured myself as the actor. We hope to have our other video stars back as soon as possible, but it looks like you may have to settle with just me for the foreseeable future. Expect more videos coming really soon. Anyway, onto the newest Alarm Grid videos!

Setting an ADC-T2000 Back to Factory Default

I show you how to restore an Alarm.com ADC-T2000 Z-Wave Plus Thermostat to its factory default settings. All settings and configurations for the thermostat will be set to the same values as when the device was brand-new and fresh out of the package. You normally only factory default the ADC-T2000 Thermostat if you are selling it or giving it away to someone else. You may also perform a factory reset as a last-resort troubleshooting step if nothing else seems to fix an issue.

Programming DSC PG9905 to Qolsys IQ Panel 2 Plus

I show you how to program the DSC PG9905 Temperature Sensor to a Qolsys IQ Panel 2 Plus Alarm System. If your IQ Panel 2 Plus System is monitored with access to Alarm.com, then you can receive alerts for when your PG9905 Sensor is activated. However, if you set up the zone so that reports are sent out for Alarm.com alerts, then you will only be able to configure the PG9905 zone for either high temperature or low temperature alerts. The only way you can have a single PG9905 alert the system for both high and low temperatures is if you set the zone so that it does not report out to Alarm.com. Any temperature thresholds can be adjusted on the system as desired.

Welcome to the second Alarm Grid video recap of 2021. It has been awhile since our first recap of the year, but we really hope to make this a regular thing like it was before. Technical difficulties have slowed us down, but we're going to be back in the swing of things very soon!

Only two (2) new Alarm Grid videos were uploaded in the past week, both of them on Monday, February 15th. They cover the Alarm.com ADC-T2000 Thermostat and the DSC PG9905 Temperature Sensor, respectively. Both videos featured myself as the actor. We hope to have our other video stars back as soon as possible, but it looks like you may have to settle with just me for the foreseeable future. Expect more videos coming really soon. Anyway, onto the newest Alarm Grid videos!

Setting an ADC-T2000 Back to Factory Default

I show you how to restore an Alarm.com ADC-T2000 Z-Wave Plus Thermostat to its factory default settings. All settings and configurations for the thermostat will be set to the same values as when the device was brand-new and fresh out of the package. You normally only factory default the ADC-T2000 Thermostat if you are selling it or giving it away to someone else. You may also perform a factory reset as a last-resort troubleshooting step if nothing else seems to fix an issue.

Programming DSC PG9905 to Qolsys IQ Panel 2 Plus

I show you how to program the DSC PG9905 Temperature Sensor to a Qolsys IQ Panel 2 Plus Alarm System. If your IQ Panel 2 Plus System is monitored with access to Alarm.com, then you can receive alerts for when your PG9905 Sensor is activated. However, if you set up the zone so that reports are sent out for Alarm.com alerts, then you will only be able to configure the PG9905 zone for either high temperature or low temperature alerts. The only way you can have a single PG9905 alert the system for both high and low temperatures is if you set the zone so that it does not report out to Alarm.com. Any temperature thresholds can be adjusted on the system as desired.

We're checking out the best environmental sensors for our top security system picks for the 2020 holiday shopping season, which are the Honeywell Lyric, the Qolsys IQ Panel 2 Plus, and the 2GIG GC3e. Environmental sensors include life-safety sensors, flood sensors, and temperature sensors.

If you haven't seen our alarm panel 2020 holiday buying guide or our security sensor 2020 holiday buying guide, then be sure to go and check those out, as they will give a nice introduction to this buying guide for environmental sensors. You will need to make the same compatibility considerations for environmental sensors as you do for security sensors. The sensors you choose must be compatible with your system and communicate at a wireless frequency that is accepted by the alarm panel you are using.

As a refresher, here are the compatible sensor lineups for our recommended systems. Just like last time, the sensor lineups that are italicized and underlined represent the encrypted sensors that provide extra wireless security and protection.

• Honeywell Lyric - Honeywell SiX Series, Honeywell 5800 Series, 2GIG 345 MHz Series
• 2GIG GC3e - 2GIG eSeries Encrypted Sensors, 2GIG 345 MHz Series, Honeywell 5800 Series
• Qolsys IQ Panel 2 Plus 319.5 MHz - DSC PowerG Sensors, Qolsys S-Line Sensors, Qolsys Legacy 319.5 MHz Sensors, Legacy Interlogix Sensors, Legacy GE Sensors
• Qolsys IQ Panel 2 Plus 345 MHz - DSC PowerG Sensors, Honeywell 5800 Sensors, 2GIG 345 MHz Sensors
• Qolsys IQ Panel 2 Plus 433 MHz - DSC PowerG Sensors, Legacy DSC 433 MHZ Sensors

While security sensors look for signs of forced entry and unauthorized access, environmental sensors look for undesirable environmental conditions. Specifically, we offer environmental sensors that look for life-threatening conditions, such as a fire or the presence of carbon monoxide (CO) gas. We also offer environmental sensors for detecting floods, water leaks, and unusually high or low temperatures that indicate a broken HVAC system. We will cover each type of environmental sensor in greater detail later in this holiday buying guide.

Adding environmental sensors to your system offers a few advantages. For one, it makes your alarm system more versatile so that it is looking for more than just security breaches. You will also be able to check off more boxes on your certificate of alarm (CoA), and that could lead to bigger savings on your home owner's insurance. Make sure to check with your insurance company to see if that is the case.

Life-Safety Sensors

Life-safety sensors monitor for unsafe environmental conditions that could result in a loss of life. Specifically, this group is primarily comprised of smoke and heat detectors and carbon monoxide sensors. There are also special combination sensors and listening modules that we will discuss further down the line.

First, we will take a look at some of our most popular smoke and heat detectors. These sensors monitor for both the smoke and extremely high temperatures associated with a fire. It is recommended that you have at least one (1) of these sensors on each floor of your building, particularly inside of sleeping areas and in central and connecting areas such as living rooms and hallways.

When checking out these sensors, you might also look for one-go-all-go functionality. This means that when one detector on the network activates, all of the other compatible sensors on the network will also activate their sounders. This can be very important for ensuring that everyone is alerted to the emergency. Certain jurisdictions may require one-go-all-go as part of building codes, so check with your local fire marshal to see if that is the case.

Here are our top picks for smoke and heat detectors.

Sensor Name	Product Lineup	Compatibility	Range	Encryption	Notes
Honeywell SiXSMOKE	Honeywell SiX Series	Lyric	300 Nominal Feet	128-bit AES	Encrypted photoelectric smoke detector and 135°F fixed temperature and 15°F per minute rate-of-rise heat detector w/ 85 dB sounder. Supports One-Go-All-Go.
DSC PG9936	PowerG	All IQ Panel 2 Plus	2,000 Feet Open Air	128-bit AES	Encrypted photoelectric smoke detector and 135°F fixed temperature heat detector w/ 85 dB sounder. Supports One-Go-All-Go.
2GIG SMKT8e-345	2GIG eSeries	2GIG GC3e	350 Nominal Feet	2GIG eSeries encryption	Encrypted photoelectric smoke detector and 15°F per minute rate-of-rise heat detector when fixed temperature is 104°F or higher w/ 90 dB sounder and freeze detection at 40°F.
Honeywell 5808W3	Honeywell 5800 Series	Lyric, GC3e, 345 MHz IQ2+	200 Nominal Feet	None	Non-encrypted photoelectric smoke detector and 135°F fixed temperature heat detector w/ 85 dB sounder and freeze detection at 41°F.

Now let's look at carbon monoxide sensors. These devices respond upon detecting unusually high levels of carbon monoxide (CO) gas. This gas is both odorless and tasteless, making it virtually impossible to detect without a proper sensor. The gas is extremely harmful to humans, and it can result in serious injury or death in a matter of minutes. We recommend installing at least one CO detector on each floor of your home or office. They are often installed outside of garages and furnace rooms where CO events are most likely to occur.

Here are our top picks for carbon monoxide sensors.

Sensor Name	Product Lineup	Compatibility	Range	Encryption	Notes
DSC PG9933	PowerG	All IQ Panel 2 Plus	2,000 Feet Open Air	128-bit AES	PowerG CO Detector w/ 85 dB sounder.
2GIG CO8e	2GIG eSeries	2GIG GC3e	350 Nominal Feet	2GIG eSeries encryption	2GIG eSeries CO Detector w/ 85 dB sounder.
Honeywell 5800CO	Honeywell 5800 Series	Lyric, GC3e, 345 MHz IQ2+	200 Nominal Feet	None	Honeywell 5800 Series CO Detector w/ 85 dB sounder.
2GIG CO8	2GIG 345 MHz Series	Lyric, GC3e, 345 MHz IQ2+	350 Nominal Feet	None	2GIG CO Detector w/ 85 dB sounder.
Qolsys IQ Carbon	Qolsys 319.5 MHz Series	319.5 MHz IQ Panel 2 Plus	300 Nominal Feet	None	Qolsys CO Detector w/ 85 dB sounder.

We also want to give some special recognition to some combination smoke and CO detectors from Honeywell. These sensors combine fire detection with carbon monoxide detection into one convenient life-safety device.

Here are our top picks for combination smoke and CO detectors.

Sensor Name	Product Lineup	Compatibility	Range	Encryption	Notes
Honeywell SiXCOMBO	Honeywell SiX Series	Lyric	300 Nominal Feet	128-bit AES	Encrypted photoelectric smoke detector and 135°F fixed temperature heat detector and CO detector w/ 85 dB sounder. Supports One-Go-All-Go.
Honeywell 5800COMBO	Honeywell 5800 Series	Lyric, GC3e, 345 MHz IQ2+	200 Nominal Feet	None	Encrypted photoelectric smoke detector and 135°F fixed temperature heat detector and CO detector w/ 85 dB sounder and freeze detection at 41°F.

Lastly, we want to mention a pair of listening modules. These devices actively listen for the Temporal 3 (T3) sound of an activated smoke detector or the Temporal 4 (T4) sound of an activated carbon monoxide sensor. These are commonly used with wired smoke detectors and CO detectors that would otherwise have no way of interfacing with an alarm system. If your smoke detectors or CO detectors are one-go-all-go, then, a single listening module can take over your entire wired detector network.

Here are our top picks for smoke & CO listening modules.

Sensor Name	Product Lineup	Compatibility	Range	Encryption	Notes
Encore FireFighter FF345	Encore 345 MHz Series	Lyric, GC3e, 345 MHz IQ2+	200 Nominal Feet	None	Offers both T3 Detection for Fire & T4 Detection for CO
Interlogix SLX-AD-T3	Legacy Interlogix 319.5 MHz	319.5 MHz IQ Panel 2 Plus	200 Nominal Feet	None	Only offers T3 Detection for Fire. Not for use with CO detectors.

Flood Sensors

Next, we'll be looking at flood sensors. These devices use probes to detect water caused by a flood or leak. It only takes a small amount of liquid to activate one of these sensors, so your system will be alerted before any serious damage occurs. Many of these sensors double as temperature sensors, so expect to see quite a bit of cross-over with that section as well. For best results, use your flood sensors in low-plane areas where leaks are likely to occur, such as underneath toilets, water heaters, and in basements. You might also see that some flood sensor have a reporting delay that is used for false alarm prevention. This will be listed in the notes section in the table when applicable.

Let's check out our top picks for flood sensors.

Sensor Name	Product Lineup	Compatibility	Range	Encryption	Notes
DSC PG9985	PowerG	All IQ Panel 2 Plus	2,000 Feet Open Air	128-bit AES	PowerG Flood Sensor w/ 6-Foot Detection Probe.
2GIG FT6e-345	2GIG eSeries	2GIG GC3e	350 Nominal Feet	2GIG eSeries Encryption	2GIG eSeries Flood Sensor w/ High Temperature Detection @ 95°F and Freeze Detection @ 41°F.
Qolsys IQ Flood-S	Qolsys S-Line Series	319.5 MHz IQ Panel 2 Plus	600 Nominal Feet	Qolsys S-Line Encryption	Qolsys S-Line Flood Sensor w/ 6-Foot Detection Probe. Has a 1 to 3 minute reporting delay.
Honeywell 5800FLOOD	Honeywell 5800 Series	Lyric, GC3e, 345 MHz IQ2+	200 Nominal Feet	None	Honeywell 5800 Series Flood Sensor w/ High Temperature Detection @ 95°F and Freeze Detection @ 45°F. Has a 25 second reporting delay.
2GIG FT6-345	2GIG 345 MHz Series	Lyric, GC3e, 345 MHz IQ2+	350 Nominal Feet	None	2GIG 345 MHz Flood Sensor w/ High Temperature Detection @ 95°F and Freeze Detection @ 41°F.

Temperature Sensors

The final type of environmental sensors we'll be checking out are temperature sensors. These sensors look for unusually high or low temperatures that indicate a broken HVAC system. When a temperature sensor is used for high-temperature detection, it should not be confused with a heat detector that looks for extreme temperatures only associated with fires. Instead, the high-end for a temperature sensor will usually activate at around 90°F. When a temperature sensor is used for low-temperature detection, it will sometimes be referred to as a freeze sensor. On the low-end, a freeze sensor will typically activate at a slightly higher than the temperature at which water freezes, which is 32°F. This is done to give the end user a bit of notice so that they can take action before the pipes freeze. You can typically expect a freeze sensor to activate between 40°F and 45°F. Most temperature sensors will offer both high and low temperature detection. And just like in the previous category, there is a lot of crossover with flood sensors, so you may see some repeats from the previous selection.

Here are our top picks for temperature sensors.

Sensor Name	Product Lineup	Compatibility	Range	Encryption	Notes
DSC PG9905	PowerG	All IQ Panel 2 Plus	2,000 Feet Open Air	128-bit AES	PowerG Temperature Sensor w/ customizable high and low temperature detection.
2GIG FT6e-345	2GIG eSeries	2GIG GC3e	350 Nominal Feet	2GIG eSeries Encryption	2GIG eSeries Flood Sensor w/ High Temperature Detection @ 95°F and Freeze Detection @ 41°F.
Qolsys IQ Temp-S	Qolsys S-Line Series	319.5 MHz IQ Panel 2 Plus	600 Nominal Feet	Qolsys S-Line Encryption	Qolsys S-Line Temperature Sensor w/ High Temperature Detection @ 100°F and Low Temperature Detection at 40°F.
Honeywell 5800FLOOD	Honeywell 5800 Series	Lyric, GC3e, 345 MHz IQ2+	200 Nominal Feet	None	Honeywell 5800 Series Flood Sensor w/ High Temperature Detection @ 95°F and Freeze Detection @ 45°F. Has a reporting delay of 25 seconds.
2GIG FT6-345	2GIG 345 MHz Series	Lyric, GC3e, 345 MHz IQ2+	350 Nominal Feet	None	2GIG 345 MHz Flood Sensor w/ High Temperature Detection @ 95°F and Freeze Detection @ 41°F.

Contact Us

Remember to contact us if you have any questions about environmental sensors or their compatibility. The best way to reach us is to email support@alarmgrid.com. This is also a good email to use if you are interested in starting new monitoring service. Remember that we are available to check email from 9am to 8pm ET M-F. We look forward to hearing from you!

We're checking out the best environmental sensors for our top security system picks for the 2020 holiday shopping season, which are the Honeywell Lyric, the Qolsys IQ Panel 2 Plus, and the 2GIG GC3e. Environmental sensors include life-safety sensors, flood sensors, and temperature sensors.

If you haven't seen our alarm panel 2020 holiday buying guide or our security sensor 2020 holiday buying guide, then be sure to go and check those out, as they will give a nice introduction to this buying guide for environmental sensors. You will need to make the same compatibility considerations for environmental sensors as you do for security sensors. The sensors you choose must be compatible with your system and communicate at a wireless frequency that is accepted by the alarm panel you are using.

As a refresher, here are the compatible sensor lineups for our recommended systems. Just like last time, the sensor lineups that are italicized and underlined represent the encrypted sensors that provide extra wireless security and protection.

• Honeywell Lyric - Honeywell SiX Series, Honeywell 5800 Series, 2GIG 345 MHz Series
• 2GIG GC3e - 2GIG eSeries Encrypted Sensors, 2GIG 345 MHz Series, Honeywell 5800 Series
• Qolsys IQ Panel 2 Plus 319.5 MHz - DSC PowerG Sensors, Qolsys S-Line Sensors, Qolsys Legacy 319.5 MHz Sensors, Legacy Interlogix Sensors, Legacy GE Sensors
• Qolsys IQ Panel 2 Plus 345 MHz - DSC PowerG Sensors, Honeywell 5800 Sensors, 2GIG 345 MHz Sensors
• Qolsys IQ Panel 2 Plus 433 MHz - DSC PowerG Sensors, Legacy DSC 433 MHZ Sensors

While security sensors look for signs of forced entry and unauthorized access, environmental sensors look for undesirable environmental conditions. Specifically, we offer environmental sensors that look for life-threatening conditions, such as a fire or the presence of carbon monoxide (CO) gas. We also offer environmental sensors for detecting floods, water leaks, and unusually high or low temperatures that indicate a broken HVAC system. We will cover each type of environmental sensor in greater detail later in this holiday buying guide.

Adding environmental sensors to your system offers a few advantages. For one, it makes your alarm system more versatile so that it is looking for more than just security breaches. You will also be able to check off more boxes on your certificate of alarm (CoA), and that could lead to bigger savings on your home owner's insurance. Make sure to check with your insurance company to see if that is the case.

Life-Safety Sensors

Life-safety sensors monitor for unsafe environmental conditions that could result in a loss of life. Specifically, this group is primarily comprised of smoke and heat detectors and carbon monoxide sensors. There are also special combination sensors and listening modules that we will discuss further down the line.

First, we will take a look at some of our most popular smoke and heat detectors. These sensors monitor for both the smoke and extremely high temperatures associated with a fire. It is recommended that you have at least one (1) of these sensors on each floor of your building, particularly inside of sleeping areas and in central and connecting areas such as living rooms and hallways.

When checking out these sensors, you might also look for one-go-all-go functionality. This means that when one detector on the network activates, all of the other compatible sensors on the network will also activate their sounders. This can be very important for ensuring that everyone is alerted to the emergency. Certain jurisdictions may require one-go-all-go as part of building codes, so check with your local fire marshal to see if that is the case.

Here are our top picks for smoke and heat detectors.

Sensor Name	Product Lineup	Compatibility	Range	Encryption	Notes
Honeywell SiXSMOKE	Honeywell SiX Series	Lyric	300 Nominal Feet	128-bit AES	Encrypted photoelectric smoke detector and 135°F fixed temperature and 15°F per minute rate-of-rise heat detector w/ 85 dB sounder. Supports One-Go-All-Go.
DSC PG9936	PowerG	All IQ Panel 2 Plus	2,000 Feet Open Air	128-bit AES	Encrypted photoelectric smoke detector and 135°F fixed temperature heat detector w/ 85 dB sounder. Supports One-Go-All-Go.
2GIG SMKT8e-345	2GIG eSeries	2GIG GC3e	350 Nominal Feet	2GIG eSeries encryption	Encrypted photoelectric smoke detector and 15°F per minute rate-of-rise heat detector when fixed temperature is 104°F or higher w/ 90 dB sounder and freeze detection at 40°F.
Honeywell 5808W3	Honeywell 5800 Series	Lyric, GC3e, 345 MHz IQ2+	200 Nominal Feet	None	Non-encrypted photoelectric smoke detector and 135°F fixed temperature heat detector w/ 85 dB sounder and freeze detection at 41°F.

Now let's look at carbon monoxide sensors. These devices respond upon detecting unusually high levels of carbon monoxide (CO) gas. This gas is both odorless and tasteless, making it virtually impossible to detect without a proper sensor. The gas is extremely harmful to humans, and it can result in serious injury or death in a matter of minutes. We recommend installing at least one CO detector on each floor of your home or office. They are often installed outside of garages and furnace rooms where CO events are most likely to occur.

Here are our top picks for carbon monoxide sensors.

Sensor Name	Product Lineup	Compatibility	Range	Encryption	Notes
DSC PG9933	PowerG	All IQ Panel 2 Plus	2,000 Feet Open Air	128-bit AES	PowerG CO Detector w/ 85 dB sounder.
2GIG CO8e	2GIG eSeries	2GIG GC3e	350 Nominal Feet	2GIG eSeries encryption	2GIG eSeries CO Detector w/ 85 dB sounder.
Honeywell 5800CO	Honeywell 5800 Series	Lyric, GC3e, 345 MHz IQ2+	200 Nominal Feet	None	Honeywell 5800 Series CO Detector w/ 85 dB sounder.
2GIG CO8	2GIG 345 MHz Series	Lyric, GC3e, 345 MHz IQ2+	350 Nominal Feet	None	2GIG CO Detector w/ 85 dB sounder.
Qolsys IQ Carbon	Qolsys 319.5 MHz Series	319.5 MHz IQ Panel 2 Plus	300 Nominal Feet	None	Qolsys CO Detector w/ 85 dB sounder.

We also want to give some special recognition to some combination smoke and CO detectors from Honeywell. These sensors combine fire detection with carbon monoxide detection into one convenient life-safety device.

Here are our top picks for combination smoke and CO detectors.

Sensor Name	Product Lineup	Compatibility	Range	Encryption	Notes
Honeywell SiXCOMBO	Honeywell SiX Series	Lyric	300 Nominal Feet	128-bit AES	Encrypted photoelectric smoke detector and 135°F fixed temperature heat detector and CO detector w/ 85 dB sounder. Supports One-Go-All-Go.
Honeywell 5800COMBO	Honeywell 5800 Series	Lyric, GC3e, 345 MHz IQ2+	200 Nominal Feet	None	Encrypted photoelectric smoke detector and 135°F fixed temperature heat detector and CO detector w/ 85 dB sounder and freeze detection at 41°F.

Lastly, we want to mention a pair of listening modules. These devices actively listen for the Temporal 3 (T3) sound of an activated smoke detector or the Temporal 4 (T4) sound of an activated carbon monoxide sensor. These are commonly used with wired smoke detectors and CO detectors that would otherwise have no way of interfacing with an alarm system. If your smoke detectors or CO detectors are one-go-all-go, then, a single listening module can take over your entire wired detector network.

Here are our top picks for smoke & CO listening modules.

Sensor Name	Product Lineup	Compatibility	Range	Encryption	Notes
Encore FireFighter FF345	Encore 345 MHz Series	Lyric, GC3e, 345 MHz IQ2+	200 Nominal Feet	None	Offers both T3 Detection for Fire & T4 Detection for CO
Interlogix SLX-AD-T3	Legacy Interlogix 319.5 MHz	319.5 MHz IQ Panel 2 Plus	200 Nominal Feet	None	Only offers T3 Detection for Fire. Not for use with CO detectors.

Flood Sensors

Next, we'll be looking at flood sensors. These devices use probes to detect water caused by a flood or leak. It only takes a small amount of liquid to activate one of these sensors, so your system will be alerted before any serious damage occurs. Many of these sensors double as temperature sensors, so expect to see quite a bit of cross-over with that section as well. For best results, use your flood sensors in low-plane areas where leaks are likely to occur, such as underneath toilets, water heaters, and in basements. You might also see that some flood sensor have a reporting delay that is used for false alarm prevention. This will be listed in the notes section in the table when applicable.

Let's check out our top picks for flood sensors.

Sensor Name	Product Lineup	Compatibility	Range	Encryption	Notes
DSC PG9985	PowerG	All IQ Panel 2 Plus	2,000 Feet Open Air	128-bit AES	PowerG Flood Sensor w/ 6-Foot Detection Probe.
2GIG FT6e-345	2GIG eSeries	2GIG GC3e	350 Nominal Feet	2GIG eSeries Encryption	2GIG eSeries Flood Sensor w/ High Temperature Detection @ 95°F and Freeze Detection @ 41°F.
Qolsys IQ Flood-S	Qolsys S-Line Series	319.5 MHz IQ Panel 2 Plus	600 Nominal Feet	Qolsys S-Line Encryption	Qolsys S-Line Flood Sensor w/ 6-Foot Detection Probe. Has a 1 to 3 minute reporting delay.
Honeywell 5800FLOOD	Honeywell 5800 Series	Lyric, GC3e, 345 MHz IQ2+	200 Nominal Feet	None	Honeywell 5800 Series Flood Sensor w/ High Temperature Detection @ 95°F and Freeze Detection @ 45°F. Has a 25 second reporting delay.
2GIG FT6-345	2GIG 345 MHz Series	Lyric, GC3e, 345 MHz IQ2+	350 Nominal Feet	None	2GIG 345 MHz Flood Sensor w/ High Temperature Detection @ 95°F and Freeze Detection @ 41°F.

Temperature Sensors

The final type of environmental sensors we'll be checking out are temperature sensors. These sensors look for unusually high or low temperatures that indicate a broken HVAC system. When a temperature sensor is used for high-temperature detection, it should not be confused with a heat detector that looks for extreme temperatures only associated with fires. Instead, the high-end for a temperature sensor will usually activate at around 90°F. When a temperature sensor is used for low-temperature detection, it will sometimes be referred to as a freeze sensor. On the low-end, a freeze sensor will typically activate at a slightly higher than the temperature at which water freezes, which is 32°F. This is done to give the end user a bit of notice so that they can take action before the pipes freeze. You can typically expect a freeze sensor to activate between 40°F and 45°F. Most temperature sensors will offer both high and low temperature detection. And just like in the previous category, there is a lot of crossover with flood sensors, so you may see some repeats from the previous selection.

Here are our top picks for temperature sensors.

Sensor Name	Product Lineup	Compatibility	Range	Encryption	Notes
DSC PG9905	PowerG	All IQ Panel 2 Plus	2,000 Feet Open Air	128-bit AES	PowerG Temperature Sensor w/ customizable high and low temperature detection.
2GIG FT6e-345	2GIG eSeries	2GIG GC3e	350 Nominal Feet	2GIG eSeries Encryption	2GIG eSeries Flood Sensor w/ High Temperature Detection @ 95°F and Freeze Detection @ 41°F.
Qolsys IQ Temp-S	Qolsys S-Line Series	319.5 MHz IQ Panel 2 Plus	600 Nominal Feet	Qolsys S-Line Encryption	Qolsys S-Line Temperature Sensor w/ High Temperature Detection @ 100°F and Low Temperature Detection at 40°F.
Honeywell 5800FLOOD	Honeywell 5800 Series	Lyric, GC3e, 345 MHz IQ2+	200 Nominal Feet	None	Honeywell 5800 Series Flood Sensor w/ High Temperature Detection @ 95°F and Freeze Detection @ 45°F. Has a reporting delay of 25 seconds.
2GIG FT6-345	2GIG 345 MHz Series	Lyric, GC3e, 345 MHz IQ2+	350 Nominal Feet	None	2GIG 345 MHz Flood Sensor w/ High Temperature Detection @ 95°F and Freeze Detection @ 41°F.

Contact Us

Remember to contact us if you have any questions about environmental sensors or their compatibility. The best way to reach us is to email support@alarmgrid.com. This is also a good email to use if you are interested in starting new monitoring service. Remember that we are available to check email from 9am to 8pm ET M-F. We look forward to hearing from you!

As you may recall, Qolsys recently released Firmware Version 2.5.0 for the IQ Panel 2 and IQ Panel 2 Plus. One thing we forgot to explain in greater detail is the new ability for IQ Panel 2 users to receive temperature sensor alerts from Alarm.com. Alerts can be sent via email and/or text.

We posted awhile back about the inability for Alarm.com users to receive alerts regarding temperature sensor activity. This issue has now been addressed with Qolsys IQ Panel 2 Plus Firmware Version 2.5.0. While this doesn't fix the issue for other security systems, it does provide an effective solution for anyone using temperature sensors with the Qolsys IQ Panel 2 or IQ Panel 2 Plus. Being able to receive remote alerts from Alarm.com regarding temperature sensor activity can be very important in case of a broken HVAC system causing an overly hot or cool home.

The solution comes from the new Sensor Group - 25 Non-Reporting. This Sensor Group is available for use with environmental sensors, including any temperature, flood and freeze sensors. When a zone uses this Sensor Group, activating the associated sensor, will result in an alert being sent to Alarm.com, but not a central monitoring station. Alarm.com can then automatically forward the alert to the end user through text and/or email, depending on their notification settings.

If you are looking for a temperature sensor for a Qolsys IQ Panel 2 Plus, we generally recommend the DSC PG9905 Temperature Sensor. As a PowerG Sensor, the PG9905 will work with all versions of the IQ Panel 2 Plus. There are also various legacy RF temperature sensors available if you cannot go the PowerG route for whatever reason. If you have an original IQ Panel 2 System, then you will want to consider 319.5 MHz temperature sensors, such as the Qolsys IQ Temp.

In addition to Sensor Group - 25 Non-Reporting, Qolsys has also added another new Sensor Group - 53 with Sensor Type - High Temperature. This programming option can also be used with environmental temperature sensors like the ones listed above. It will allow the user to report to both Alarm.com and Central Station, for high priority environmental sensors where the user doesn't want to take a chance on missing a notification.

Remember that you will need an alarm monitoring plan with Alarm.com service to start using the Alarm.com platform. Examples of compatible monitoring plans include the Gold and Platinum Level Plans from Alarm Grid (Self or Full). We offer free technical support for all Alarm Grid monitored customers, and we are happy to help you set up a compatible temperature sensor for your IQ Panel 2 or IQ Panel 2 Plus if you are experiencing difficulties. Just email us at support@alarmgrid.com. Our support hours run from 9am to 8pm ET M-F, so keep that in mind when emailing our support team. We look forward to hearing from you!

As you may recall, Qolsys recently released Firmware Version 2.5.0 for the IQ Panel 2 and IQ Panel 2 Plus. One thing we forgot to explain in greater detail is the new ability for IQ Panel 2 users to receive temperature sensor alerts from Alarm.com. Alerts can be sent via email and/or text.

We posted awhile back about the inability for Alarm.com users to receive alerts regarding temperature sensor activity. This issue has now been addressed with Qolsys IQ Panel 2 Plus Firmware Version 2.5.0. While this doesn't fix the issue for other security systems, it does provide an effective solution for anyone using temperature sensors with the Qolsys IQ Panel 2 or IQ Panel 2 Plus. Being able to receive remote alerts from Alarm.com regarding temperature sensor activity can be very important in case of a broken HVAC system causing an overly hot or cool home.

The solution comes from the new Sensor Group - 25 Non-Reporting. This Sensor Group is available for use with environmental sensors, including any temperature, flood and freeze sensors. When a zone uses this Sensor Group, activating the associated sensor, will result in an alert being sent to Alarm.com, but not a central monitoring station. Alarm.com can then automatically forward the alert to the end user through text and/or email, depending on their notification settings.

If you are looking for a temperature sensor for a Qolsys IQ Panel 2 Plus, we generally recommend the DSC PG9905 Temperature Sensor. As a PowerG Sensor, the PG9905 will work with all versions of the IQ Panel 2 Plus. There are also various legacy RF temperature sensors available if you cannot go the PowerG route for whatever reason. If you have an original IQ Panel 2 System, then you will want to consider 319.5 MHz temperature sensors, such as the Qolsys IQ Temp.

In addition to Sensor Group - 25 Non-Reporting, Qolsys has also added another new Sensor Group - 53 with Sensor Type - High Temperature. This programming option can also be used with environmental temperature sensors like the ones listed above. It will allow the user to report to both Alarm.com and Central Station, for high priority environmental sensors where the user doesn't want to take a chance on missing a notification.

Remember that you will need an alarm monitoring plan with Alarm.com service to start using the Alarm.com platform. Examples of compatible monitoring plans include the Gold and Platinum Level Plans from Alarm Grid (Self or Full). We offer free technical support for all Alarm Grid monitored customers, and we are happy to help you set up a compatible temperature sensor for your IQ Panel 2 or IQ Panel 2 Plus if you are experiencing difficulties. Just email us at support@alarmgrid.com. Our support hours run from 9am to 8pm ET M-F, so keep that in mind when emailing our support team. We look forward to hearing from you!

Hi DIYers! Today, we want to discuss an unusual quirk we found with Alarm.com. It turns out that the Alarm.com platform cannot receive alerts from temperature sensors. This is important for any Alarm.com user who wants to receive remote alerts for unusually high or low temperatures.

When you use sensors with a security system, the expectation is that you will be able to receive alerts from an interactive service platform whenever the device is activated. But with Alarm.com, the platform cannot receive incoming signals from a system regarding faulted Temperature Zones. This means that you cannot use Alarm.com to receive text and/or email alerts regarding an activated temperature sensor.

We discovered this issue due to a customer using a DSC PG9905 Temperature Sensor with a Qolsys IQ Panel 2 Plus System. We quickly discovered that the issue also applied to any temperature used with an Alarm.com Security System. This is important to note, as we know that many users out there will want to know about any unusual temperatures in their homes and businesses. Many people rely on using these sensors with their security systems so that they know if their HVAC systems break before serious and expensive damage occurs.

Fortunately, there is still another way you can receive alerts from Alarm.com regarding an unusually high or low temperature. If you pair a Z-Wave thermostat with your system, then you can set up notifications to be sent out whenever the detected temperature goes outside of a set threshold. A good Z-Wave thermostat to use for this application is an Alarm.com ADC-T3000 Thermostat. This thermostat also supports the ADC-S2000 Temperature Sensor, which will allow you to monitor the temperature in a second area of the building as well.

Another option is to use the Total Connect 2.0 platform with a Resideo Security System instead. Unlike Alarm.com, the Total Connect 2.0 service can be set up to send out text and/or email notifications for any sensor type, including temperature sensors. The Resideo LYNX Touch and Lyric Systems also have designed Temperature Zones that are used with Z-Wave thermostats to end high-low temperature alerts to AlarmNet360 and TC2 whenever an unusual temperature is detected. Just make sure that any Temperature Zone is noted as such on your central station document. These zones are frequently mistaken for 24-hour auxiliary medical zones.

If you have any questions about the functionality of temperature sensors, the Alarm.com and Total Connect 2.0 platforms, or any of our other products or services, please email us at support@alarmgrid.com. Remember that our support hours are from 9am to 8pm ET M-F. We also recommend checking out our monitoring page to learn more about our monitoring services. We look forward to hearing from you and providing top-quality monitoring service for your home or business.

UPDATE: This issue was later addressed in Qolsys IQ Panel 2 Plus Firmware Update 2.5.0. Please see this post for more information.

Hi DIYers! It's hard to believe, but it's already May. Time sure flies doesn't it? Summer is quickly approaching and now is a great time to buy temperature sensors for your home. This way, you can be quickly notified if your home's AC system is ever not cooling the building properly.

Temperature sensors aren't just for letting you know about low-temperatures. They can also let you know about unusually high temperatures that would only occur if the AC went out. This is great for ensuring that the house you come home to is nice and comfortably. There's nothing worse than ending your day only to find that your AC went out and your home is uncomfortably hot! Our temperature sensors are also great for pairing with smart thermostats, which can often send you remote alerts when temperatures go outside certain thresholds.

Today, we're taking a look at three temperature sensors that you might consider adding to your system. We'll be focusing on the high-temperature sensing capabilities here, but we may brush over other features as well. Let's take a look!

Honeywell 5821

The Honeywell 5821 has two possible temperature settings. If programmed as Loop 2 with both DIP switches OFF, the sensor will alert the system when the temperature rises above 95°F for more than 10 minutes. You can also set it to SW1 DIP Switch ON and SW2 DIP Switch OFF on Loop 2 to have the sensor activate when the temperature rises above 75°F for more than 10 minutes.

The option to choose between a 95°F and a 75°F threshold is very useful, as some homes in different areas will certainly have different normal temperatures! The sensor also offers freeze detection and flood monitoring when paired with a water detection probe. An optional wired temperature probe is also available. The device operates at 345 MHz.

Qolsys IQ Temp

The Qolsys IQ Temp offers high-temperature detection at 100°F. The zone will then restore when the temperature falls below 95°F. Although this might be too high for many homes, there are some very hot areas that frequently exceed 110°F or even 120°F. This is a relatively simple device that can easily pair with nearly any 319.5 MHz alarm system. It also offers freeze detection at 40°F and restores once the temperature rises above 45°F. Like most temperature sensors, the high and low temperature zones will need to be configured separately.

2GIG FT6-345

The 2GIG FT6-345 Wireless Flood and Temperature Detector is a 345 MHz sensor designed with 2GIG Security Systems in mind. The sensor uses Loop 2 for high-temperature detection. It activates when a temperature of 95°F or higher is detected for three straight minutes. The sensor will restore when the temperature falls below 95°F for three straight minutes. The sensor can also be programmed with Loop 1 for freeze detection (41°F or lower for three straight minutes) or Loop 3 for water detection.

If you need help choosing a high-temperature detector for your home, please reach out to us! We can help you determine the best solution for your needs. The best way to reach us is to email support@alarmgrid.com. We will check your email at our earliest convenience and respond back as quickly as possible. We look forward to hearing from you!