Apollo AlarmSense 9-33V Polycarbonate Optical Smoke Detector 100 x 42mm White 2500445428
£32.78 inc VAT £27.32 ex VAT
This type of smoke detector works by a Infrared LED pulsating its beam on the smoke particles and when the Infrared beam reflects of it, the photodiode light receptor recieves it and sends a signal to the circuit which sounds the alarm.
Description
AlarmSense 9-33V Polycarbonate Optical Smoke Detector 100 x 42mm White