The 1122 Wireless PIR Motion Detector uses passive infrared technology to detect motion in a wide angle lens pattern. The 1122 also features a wall tamper, internal case
tamper, survey LED, low battery indicator, adjustable sensitivity, and pulse count. Disarm/disable and pet immunity up to 55 pounds are available for panels with firmware Version 172 and higher.

To extend battery life, the 1122 is equipped with a 30-second sleep timer that restarts on every motion detection. This functionality allows the 1122 to wake up after 30 seconds with no motion detected unless disarm/disable is active.