5800PIR Sensor

All of a sudden a 5800PIR sensor that has been on my alarm system working fine for about 2 years started triggering for no reason. I took it down and cleaned the lens and blew out the inside to make sure no dust or bugs were inside the unit. Whenever I set the alarm to away this zone triggers within 5-8 minutes. It is not giving a “low bat” warning to the panel or keypad and nothing in the house or zone sensor area has changed.

Any ideas?

Thank you,


In addition to dust/debris, f the sensor is pointed toward a window or mounted near HVAC vents that could cause an false trigger.

Common causes for false alarm triggers on motions can be found here: