" Overview: This passive wide infrared (PIR) wireless angular motion sensor is a PIR 433MHz RF motion detector for human detection. The motion detector can work with the Sonoff RF bridge 433, providing push detected human alarm message to your phone. features: * Double infrared. Ultra-low power microprocessors. * Imported sensors, overcome false alarm, anti-crawling, no blind spot. * Dual temperature compensation technology, adjustable number of pulses. * Robust and durable, suitable for homes, offices, hangars, garages, etc. * Easy installation and set up, wall mounted. Characteristics: 433MHz Transmission Distance: 150m (open) Voltage: DC 3V (2 * AAA) Standby current: ≤35? A alarm current: ≤15mA Wireless frequency: 433.92 Wireless transmission code: 1527Mhz (default) Detection distance: 9-12m @ 25? Detection angle: 110 degrees (wide angle) maximum coverage area: 12m * 12m alarm light: for 3 seconds Work environment: indoor anti-white light intensity: 6500Lux Battery type: 2 * AAA (not included) Item Size: 94 * 63 * 42mm Item weight: approx. 60g / 2.1oz Information package: Package size: approx. 9.7 * 6.9 * 5.1cm / 3.8 * 2.7 * 2in Package weight: approx. 82g / 2.9oz Packing list: 1 * PIR motion sensor (without batteries) 1 * Bag of mounting screws 1 * User Manual "