Sonoff PIR2 Auto PIR Sensor Dual Infrared IR Wireless Motion Detector 433Mhz RF Sensor Smart Home Automation Security Alarm System for Alexa Home Description: PIR2 is a 433MHz RF PIR motion sensor that for human detection. The motion detector can work with the Sonoff RF Bridge 433（Not included), providing human detected alarm message push to your phone. Features for Sonoff PIR2 sensor - 433MHz RF PIR motion sensor for human detection. - Dual infrared - Ultra-low power microprocessors - Double temperature compensation technology - Robust and durable, suitable for homes, offices, sheds, garages etc. - Easy installation and set-up, wall-mounted Specification for Sonoff PIR2 sensor 433MHz Transmit distance: 150m (open) Voltage: 3V (2*AA) Battery type: 2*AA (not included) Standby current: ≤9μA Alarm current: ≤10mA Wireless frequency: 433.92MHz Wireless Transmit Code: 1527Mhz (default) Detection distance: 12m@ 25℃ Detection angle: 110 degrees Maximum coverage area: 12m*12m Alarm indicator light: on for 3 seconds Working environment: indoor Tamper switch: normally closed Anti-white light intensity: 10000Lux Product Size: 120*62*46mm Weight: 120g Package Information: Package Size: Approx. 16.5 * 6.5 * 5.0cm / 6.5 * 2.55 *1.97in Package Weight: Approx. 91g / 3.2oz Packing List: 1 * Sonoff PIR2 Sensor (without batteries)