Description All D-TECT X detectors complying with BS8418 feature four PIR sensors GJD 30m Wireless Motion Detector, IP65 housings that are fully tampered and a discrete internal antenna. The units accept two 3 Volt CR123 Batteries, have a 500m range of RF Transmission on 868MHz as well as an individual pairing code. With the GJD393 four-way expansion module, the receiver (GJD392) is capable of linking up to 16 detectors. The number of detectors is a factor. 30m Wireless Motion Detector Features: Transmission range: 500m Line of Sight The detection range is 30 x3 0m Detector orientation: 180deg pan & 90deg tilt Maximum Mounting Height: 6m Tapping Switches: front & rear, open case and remove from wall Pulse count: 1 to 2 Photocell from 2 Lux to 24 Hour High Impact ABS Housing Protection Rating IP65