◆Used Passive Infrared (PIR) detection ◆2 in 1 Alarm & Door Chime ◆No wiring or installation ◆120-150 Decibel Alarm ◆Remote control is optional ◆The communication distance is 150m ◆Versatile mounting capability (you can mount the detector by the front door, window frame, driveway, walk path , backyard, ceiling or anywhere you need) ◆AC Adaptor or Battery operated
