Intelligent sensor for doors and windows Sonoff DW2 - RF 433MHz is a sensor with a sensor, which provides greater security of the apartment against burglary. The sensor sends a notification to the phone every time a door/window is opened or closed. Take care of your security and enjoy the peace of mind in your apartment Always sure when the house is safe The sensor sends notifications to the application on your phone if an uninvited guest tries to open a window or door of your apartment. Don't worry about things left in the apartment Ultra-efficient battery Thanks to its low power consumption, the battery lasts for up to two years. Specification

Model DW2 Power Battery mn27 (not included) Quiescent current ≤40μA PEmission current ≤ 15mA Operating temperature -10℃ to 40℃ Dimensions 70 mm x 31 mm x 19 mm / 42 x 14 x 16 Communication RF 433MHz