Two-way wireless communication Contains battery 15m detection Close-in detection Adjustable sensitivity Noise immunity Temperature compensation Resin protected electronics Pet Immunity Selectable Battery: CR123A 3V Lithium Quiescent Current: 8?A Transmit Current: 35mA Temperature: -10 to +40°C Weight: 155g Size: 117mm x 64mm x 53mm PD6662 & EN 50131-2-2 EN Grade 2 Environmental Class II