SONOFF DW2 433MHZ RF Wireless Door Sensor Window Sensor Detector Low Power Consumption eWeLink APP Sync Status Notification Smart Sensor Need Sonoff RF BridgeR2 RF Gateway

Sonoff China. Please Note: SONOFF DW2-RF doesn t come with batteries into package, and it requires gateway like SONOFF 433MHz RF Bridge to use. Working Voltage: old version-DC12V Model: 27A12V), new version-DC3V Model: 21.5V AAA). RF: 433MHZ, Emission current: 20 mA, Quiescent current: 1.5 uA, Wireless Transmission distance: Max. 50m, Material: PC V0. PLEASE NOTE: 1. The old and new versions are shipped randomly. The battery model of the new version is 21.5V AAA, and the battery model of the old version is 1*27A12V. 2. Battery is not included in the package. SONOFF RF433MHz Bridge is required. 3. Our products support a 6-month warranty service. If there is any quality problem, please contact us. PRODUCT DESCRIPTION. Doors and windows as the entrances and exits are the weakest points of your home. An unsecured door or window is like an obvious WELCOME sign, to a burglar, so door/window sensors are also known as entry sensor. As one of the most popular home security devices, DW2-RF wir