The sonoff dw2 sensor can help secure your door or window to let you know whether your home is safe wherever you are. The sensor can trigger an alarm to your smartphone to inform you of an intruder when the door or window is opened. Connect the SONOFF wireless IP camera and you can view who the intruder is on the sensor page of APP. Whenever your door or window is opened or closed, you can check the real-time opening and closing status on eWeLink APP.

Real-time battery level display and low-battery reminder ensures you know exactly how long the sensor can run and when you need to replace batteries. With simple peel and stick installation, it is easy to fit in door frames and window sills.

DW2-Wi-Fi comes in two pieces, the transmitter fits onto the door or window and the magnetic switch attaches to the frame.

*The sensor can work for up to 3 months if the door/window is opened or closed three times a day.

**If your wifi doesn’t support 802.11b protocol then the Sonoff DW2 Wifi can not be paired to your WiFi network.

NOTE: Batteries not included


**NOTE: There is an issue with the clips that hold the batteries. The clips can cut into the battery’s protective layer and cause a short. Please do the following:
1. Wrap a single layer of electrical tape around the battery to protect it before installing.
2.  As you install it, hold a piece of paper by the clip and push the battery in.



  • Maintain linkage with SONOFF smart devices to create various smart scene
  • Turn your light on/off upon action
  • Notify you when the door/window is opened
  • Check the opening and closing status of door/window on APP
  • Battery-level display and low-battery reminder
  • Allow sharing the sensor with your family to monitor and control your home
  • No gateway required
  • Bluetooth low energy pairing
  • Support checking history record on APP
  • Low-power Wi-Fi transmission for  long lasting battery life
  • Peel and stick installation, quick and easy to use.


Icasa approved.

ICASA Sonoff Africa





  • Battery Model: AAA 1.5V;
  • Working Voltage: DC3V (2 x 1.5V battery);
  • Quiescent current: ≤ 40 μA;
  • Wi-Fi: IEEE 802.11 b 2.4GHZ;
  • Material: PC V0;


Weight0,01 kg
Dimensions1 × 1 × 1 cm




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