Description
BetterLink Driveway Alarm Systems Weatherproof Outdoor Motion Detector & Sensor with120dB Siren, Sound and Light Alert Systems Makes it Easy to Monitor & Protect Outdoor Indoor Property(2R2S) The communication range from each The communication range from each sensor to the receiver can reach up to 1 2 mile Flexible Work and Long Distance Wireless：The wireless motion sensor can work with the receiver and also can work independently