Sell Sonoff DW1 Door Window Sensor Wireless Automation Anti-theft Smart Alarm System best price

Feature Ultra-low power magnetic dedicated microprocessor. Supports wireless frequency of 433.92MHz. 200m wireless transmit distance. Built-in antenna provided. Less than 1μA quiescent current. Easily attach the main sensor on the door/window. Perfect guardian against the unwanted intruder whether you are in or out, keep yourself and your property safe and security. Specifications: Material: plastic. Color: show as pictures. Support Battery: 12V 23A Wireless frequency: 433.92MHz. Protocol: EV1527. Quiescent current: ≤5μA. Emission current: ≤10mA. Operating environment: -10°-50° (14°-122°). Product Size: 77*49.5*18.8mm. Battery: length 27mm, diameter 10mm, this model doesn't come with battery. Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package include: 1 * DW1 Door Window Sensor.