This is a pair of infrared detector. Install them at the opposite positions. Then there is a infrared area between these two detector parts. -- Small and beautiful appearance for infrared beam detector.
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Test: Sounds a "Didi-Didi" test beep from the siren. - Triggers siren instantly when separated by over 1mm from the magnetic strip. A: No, this siren work as an alarm system, it can work with wireless sensors to protect your house.
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It is simple to install, can be wall-mounted or be freestanding. The Yale Shed and Garage Alarm is standalone wire free and battery operated alarm so there is no need to run any cables. A great wireless security solution for sheds, garages, outbuildings and caravans.
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Install them at the opposite positions. Then there is a infrared area between these two detector parts. Small and beautiful appearance for infrared beam detector. 1Pair Infrared Beam Detector. Unique design of the digital filter circuit.
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This is a pair of infrared detector. Install them at the opposite positions. Then there is a infrared area between these two detector parts. -- Small and beautiful appearance for infrared beam detector.
eBay
This is a pair of infrared detector. Install them at the opposite positions. Then there is a infrared area between these two detector parts. Small and beautiful appearance for infrared beam detector.
eBay
Widely used in lift doors, revolving doors, sliding doors, fence security, window and balcony security, warehouse security, parking lots and other outdoor security venues. Feature: 1. With the function of infrared alarm, the maximum sensing distance is about 12m/39.37ft.
eBay
This is a pair of infrared detector. Install them at the opposite positions. Then there is a infrared area between these two detector parts. Small and beautiful appearance for infrared beam detector.
eBay