Sonoff DW2-RF is a Smart Home product that can be installed on anything from exterior doors and windows to interior doors and even refrigerator doors if you want to know when someone is raiding your fridge. When the door or window is opened, a message is sent to your iPhone or Android smartphone via the eWeLink app, so you always know what's going on in your home, office, or warehouse, and are alerted if your belongings are in danger or if unauthorized individuals enter a room.

You can successfully pair the Sonoff DW2-RF sensor with other Smart Home devices, so you can turn on the lights in the living room, kitchen, or bathroom when the door is opened, or you can pair a surveillance camera or an unused iPhone with the sensor and record when a door or window is opened. This can be done in the eWeLink app or with other devices using the IFTTT protocol, where you can make your home smart and perform automatic actions when one or more doors and windows are opened.

The Sonoff DW2-RF smart window and door sensor has a battery life of up to 2 years (with an average of 3 daily activations), and it stores activation logs for up to 3 months, so you can always see what happened at the point where the sensor was installed. The sensor is very easy to set up, as the two parts of the Sonoff DW2-RF come with 3M stickers on the back, so installation takes only a few seconds. Just remember that there must be no more than 5 mm between the two parts, so the sensor can detect when the door or window is opened.

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