KERUI 2 Beams Indoor 300m Outdoor 100m Photoelectric Home Security Alarm Infr...

This is Alarm Two Beam Photoelectric Infrared Detector ABT- 100m. Install them at the opposite positions. Then there is a infrared area between these two detector parts. When someone passes the infrared region for an adjusted response time, the...

Price: £ 65.45 from Bonanza Global