Buck Alert Motion Detection System ensures you don t get busted by an approaching whitetail. Don t get caught with your back to the action! The Buck Alert Motion Detection System alerts you to the presence of deer so you don t miss a key shot. Simply position the detector unit overlooking a blind spot trail or shooting lane and the receiver unit will give you the heads-up on approaching game. Simple and ingenious! Sensor: Detects motion and transmits alarm to the receiver; Detection range adjusts from 5 to 10 ; Waterproof sturdy enough to stay in the field all season; Included strap makes it easy to attach to a tree etc. Uses one 9V battery (not included). Receiver: Accepts a signal up to 330 from sensor; Supports up to 3 sensors (extras sold separately); 3 alarm modes: light sound vibrate. Uses 3 AAA batteries (not included). Be ready for the shot! Order Today! Buck Alert Motion Detection System.