may be a loose connection. You can take out the housing by sliding the plastic forward over the IR sensor. You can then check that connections are clean
put a stick of dunamite in light the fuse and run I guess
Infra Red
infra red sensors
It's most likely to be infra-red.
If it's PIR (that's passive infra-red) then think of it as an eye that can only see changes in heat, staring straight forward. Whenever something that's warmer or colder than the background moves in or out of its field-of-vision, the sensor reacts to this change in scenery and trips an alarm.
JK Infra & Management Systems
Infra-Blue was created in 1991.
Infra-Worlders was created in 1973.
Green Infra Limited was created in 2008.
In this remote, the little LED light that controls the remote will emit the infra red spectrum. You will not see the light but the control will work.
is it safe in alchemist infra realty ltd
vibrating molecules relase infra-red radiation (that's hot things)