DSC MX974

The DSC MX974 is a wired addressable passive infrared motion detector with up to 90 pounds (40kg) of pet immunity. The MX974 is designed to be used on an IQ Pro panel that has the HSM3105 MX Addressable Loop Module installed. Without this module, the IQ Pro will not support MX devices.

The IQ PRO comes in many variations. It is available in a metal or a plastic enclosure. It comes with either a Verizon, AT&T, or Telus (Canada) Cellular LTE communicator. Along with support for PowerG wireless, the IQ Pro can also be purchased with optional support for various legacy wireless frequencies, including Qolsys and Interlogix 319.5 MHz sensors, Honeywell and 2GIG 345 MHz Sensors (unencrypted only), and DSC 433 MHz Sensors.

The MX974 is feature packed with the patented True Motion Recognition™ algorithm that helps prevent false alarms. It also has a patented V-slot optic technology for improved robustness, reliability, and anti-vandalism protection. Additional high-tech features include a patented advanced elliptical and parabolic mirror technology, and patent pending black mirrors with extremely high white light immunity. The MX974 has creep zone protection, microprocessor-controlled temperature compensation, and a sealed chamber to protect the optical chamber from insects.

The MX974 uses a dual-element, low-noise pyroelectric method for sensing motion. The pyroelectric sensor is sensitive to temperature changes. It uses two sensing elements connected to each other in reverse polarity for motion detection. It is also designed to reject common non-moving IR radiation. The MX974 motion detector has a small footprint measuring only 4.5" H x 2.4" W x 1.9" D (115mm x 60mm x 48mm).

The MX974 includes a pet immunity feature. This feature prevents the motion from triggering due to movement by pets that weigh less than 90 pounds (40 kg) where the movement occurs at ground level, and up to 3.3 feet (1m) from the ground. Also, movement from animals lighter than 20 pounds (9 kg) should not trigger the alarm even if it occurs above 3.3 feet (1 m) from the ground, as long as the pet has not climbed on anything that brings them within a few feet of the front of the detector. So, make sure to mount this motion detector where there is no furniture, curtains, or stairs that might allow a pet to climb up and reach the detector.

To open the MX974, use your thumb to open the screw cover and then remove the cover screw. Next, separate the base from the cover by inserting a screwdriver into the slot and pushing inward. Inside the MX974, you'll see multiple mounting holes for different mounting options. These allow the detector to be mounted in a corner, on a flat surface, or with a tilt. The MX974 board contains four (4) wiring terminals. Terminals marked L(+)/L(-) for the MX input (connection to the panel via HSM3105) and terminals marked L(+)/L(-) for the MX output (the next device in the MX loop, where applicable).

The MX974, just like all other MX devices can be configured using the Qolsys IQ Installer app. The programmable options include Alarm LED, Event Counter, and High Traffic shutdown. Alarm LED allows you to choose either LED OFF or LED ON (default) during alarm events. Event Counter can be Low (default) or High sensitivity. When on low sensitivity, the device alarms when there is constant motion within the MX974 coverage area. High sensitivity alarms on a single motion event. The high traffic shutdown event inhibit timer setting options include 0,1-65,534, or 65,535. 0 is Always active (no timer), 1 - 65,534 is active with that long of a timer before the device shuts down in seconds, and 65,535 is for Never Active.

Specifications:

• Sensor Type: Addressable PIR Motion Detector
• Color: White
• Technology: MX Wired Loop for IQ Pro
• Tamper: Yes
• Operating Voltage: 20VDC to 40VDC
• Standby Current: 0.3mA
• Alarm Period: 2 Seconds
• True Motion Event Verification: 2 remote selections - 1 (OFF) or 2 (ON) motion events
• Alarm Current: Maximum 3.5 mA (during alarm with LED on)
• Status LED: Yes (Red)
• Mounting Location: Wall, Corner, or Ceiling
• Mounting Height: 6' to 10' (1.8m to 3m)
• Maximum Coverage: 49' (15m) or 90°
• Pet Immunity: 90 pounds (40kg)
• Operating Temperature: 14°F - 122°F (-10°C - +50°C)
• Operating Relative Humidity: Up to a maximum of 93% non-condensing
• Dimensions (H x W x D): 4.5" x 2.4" x 1.9" (115mm x 60mm x 48mm)
• Weight: 3 oz. (90g)

Accessories:

• Note: The following accessories are not verified by UL
• BR-1: Surface mounted swivel bracket that can be adjusted30° down and 45°left or right
• BR-2: BR-1 with a corner adapter
• BR-3: BR-1 with a ceiling adapter