Wireless Door/Window Sensor Sonoff DW2 RF, 433Mhz, M0802070003

The Sonoff DW2 is a new version of the Sonoff DW1 RF door/window sensor and is compatible with the Sonoff smart home product line. There are two parts: one attaches to the door/window, the other attaches to the door/window frame. When the door/window is opened, the magnetic connection is broken and the device sends an event warning signal. Unlike SmartWise DW2+, it can only detect the opening of a door or window and activate other smart devices, it does not detect the closing event. During an open event, it sends a warning signal to the RF Bridge (or relay switch with RF receiver), so the switching action can be defined as an action in the eWeLink Smart Scene function. Connects to other Sonoff smart devices - e.g. lights, relay switches controlled by sensor - with wireless, 433.92MHz RF (radio frequency) technology via Sonoff RF Bridge and SmartWise RF Bridge gateway, no wires required. Powered by one 27A type (12V) battery (trade codes BDC27A, BGC27) (not included). With the eWeLink app, you can receive an alert about open events to your iOS/Android smartphone, so you can also use it as a simple alarm clock. When the alert function is enabled, the alert is only sent to the owner's eWeLink account, the alert cannot be sent to shared accounts. Has smart scene function, open door/window detected, multiple eWeLink compatible Sonoff and SmartWise WiFi devices (smart switches, smart relay connectors and smart sockets) can be activated using the eWeLink app.