Two-way wireless communication Contains battery 15m Pyro (PIR) Detection 15m Radar (K-Band Microwave) Detection Close-in Detection Compatible with HKC's Pet Lens Adjustable Pyro & Radar sensitivity Noise immunity using digital filtering Temperature compensation Resin protected electronics Battery: CR123A 3V Lithium Quiescent Current: 8μA Transmit Current: 55mA Temperature: -10 to +40°C Weight: 175g Size: 136mm x 64mm x 53mm PD6662 & EN 50131-2-4 EN Grade 2 Environmental Class II