Uniden USHC-3 PIR Motion Sensor w/ 105 Detection AngleFormat: Retail Pkg Age: Platform: N A Easily detect movement in your home with the Uniden USHC 3 PIR Motion Sensor w 105 Detection Angle. This motion sensor is a passive infrared sensor that detects body movement from heat. The sensor features a 105 degree detection angle and a detection range of up to 40 feet. It"s the perfect way to add additional sensors to your USHC41, HC54, or HC84 Smart Home Security Systems (System required).