Passive infrared detector Anti-pets via unidirectional radio, reach 8 meters, frequency 868Mhz. Certified EN50131 Grade 2. Dual PIR technology and MW X band, anti-pets, zero angle for short distance detection, Intelligent processing of the digital signal, real temperature compensation, triple resistance RFL incorporate, selectable by bridge, cap tampers and Wall or corner, opto-relay to prevent attack with large magnets. White sun and headlights, blocked by a special mechanism, real temperature compensation. Interior installation, mounting height 2.10 to 2.70 meters. Includes 3 V long-life lithium battery. Dimensions 127.6 x 64.2 x 46.6 mm. Compatible with RISCO™ unidirectional and bidirectional wireless systems.