Honeywell 5820L vs 5815

The Honeywell 5820L is a wireless, one zone door window transmitter. Honeywell refers to the 5820L as “slimline” because it it nearly half the size of a standard door window transmitter with dimensions of 3"H x .5"W x .8"D. The slimness of the 5820L makes it a very popular transmitter and is ideal for casement and double hung windows.The 5820L has an RF transmitting range of 150 feet. The 5820L has tamper protection with front and rear tampers. the front cover tamper is always enabled. The rear tamper would need to be enabled. To enable the rear tamper, install the third screw into the tamper plate within the back plate. Both front and rear tampers use the same switch. The 5820L operates on one 1.5VDC, AAA Lithium (Energizer L92) or AAA Alkaline (Duracell MX2400, Panasonic AM-4PI, Eveready Energizer EN92). Not replacing with the approved batteries may shorten the battery life. The 5820L with approved batteries have a battery life of up to ten years.

The 5815 is a wireless , two zone door window transmitter. The 5815 is also a small transmitter which has dimensions of 3" H x 1-1/2" W x 7/8" D. The size and design of the 5815 makes it a very popular for that hard to reach small area. The 5815 has 2 loops. Loop 1 is wired terminals, Loop 2 is the 2 built in reed switches which are in parallel, only one can be used. One is located on one end, the other on the side. These are programmed as loop 2. As compact as the 5815 is, it still has an RF transmitting range of 200 feet. The 5815 has tamper protection and will send a tamper signal to the control panel when the cover is removed. It will send loop 4. The 5815 operates on one 3V Lithium battery and should only be replaced with only with approved batteries like the Panasonic CR123A, Duracell DL123A, or Ademco 466. Not using approved batteries may shorten the battery life. The 5815 with approved batteries have a battery life of up to three to five years.

Both the 5820L and the 5815 operate in temperatures that range from 32 degrees F to 120 degrees F and are not weatherproof. Both transmitters are supervised transmitters and provide low battery detection. Both the 5820L and the 5815 are UL listed.