Home security alarm system, PIR infrared motion detector alarm unit with 2 remote control infrared sensors - LIYJTK, LIYJTKxfb6y7z52q

• 【Infrared sensor】 A passive infrared sensor is an electronic sensor that measures the infrared (IR) light emitted by an object in its field of view. They are most commonly used in rotation-based motion detectors. 【How it works】 It has a built-in PIR motion sensor that will activate the alarm if any motion is detected. No wiring required, just put in the required batteries (no need for 4 AAs). 【Alarm】 When a thief or burglar is detected, the 105dB tweeter siren PIR motion detector alarm unit will emit an alarm sound for 30 seconds. 【Application】 This motion sensor alarm is ideal for protecting your property from unwanted intruders. It can cover front doors, rear doors, garages, carports, outbuildings, etc., and can also be used for caravans and RVs. 【Detection range】 The detection range is about 7-10 meters, equipped with 2 remote control switches. You can fix it on a suitable surface and turn it on using the provided remote control.