SONOFF DW2-Wi-Fi – Wireless Door/Window Sensor


【No Gateway Needed】The sensor is paired with App via Bluetooth and is controlled on App via WiFi.
【Low-Battery Reminder & History Records Check】There is a reminder on App about the low battery, and 3-month history records are automatically saved.
【Status Sync & Camera Binding】Check the status of the sensor through App to get the real status. You can also add a camera to view.
【Easy Installation】With Simple peel and stick installation, it is easy to fit in door frames and window sills.
【Note】Batteries are not included in the package.

Secure Payment:

Customer Service Guarantee

Additional information

Weight 38 g
Dimensions N/A
Battery Model

AAA 1.5V

Working Voltage

DC3V (2 x 1.5V battery)

Quiescent current

≤ 40 μA


IEEE 802.11 b 2.4GHZ



Emission current


Operating systems

(Android 4.1 & iOS 9.0) or higher

Installation gap


Working temperature


DW2-WiFi Bundle

1 PCS, 3 PCS, 5 PCS, 10 PCS

Customer Reviews

Based on 8 reviews
Ric Hansen

Works good, easy setup. But, It is Ieee802.11b only and is not compatible with the system I have. Working on a workaround.
I would still like to recommend it.

Gábor Bóna
Door sensor

Very simple to install and set up. Sometimes the push message arrives much later after the event.

Fuad Valiyev
Door sensor

Very simple and convenient. It works for me.

Szigethy Ferenc

Super, thank you!

Hardy Kruger
Battery usage high

It works as advertised, however only if you're happy to replace batteries every 6 weeks would I recommend it. Also unless you happen to open the switch on the app will you notice the low battery warning.

Sorry for the inconvenience, we have fed back your suggestions to the relevant departments.

Very high power cnsumption - two AAA batt in 1,5 month

Very high power cnsumption - two AAA batt in 1,5 month only for from 5 to 10 events.

We are very sorry to bring you a bad shopping experience, please upgrade the firmware to the latest version.If you still have questions, you can send an email to our support:

John Anderson
Inexpensive yet valuable and very high quality

Everything I purchase from Itead is of the highest quality and very dependable, using these contacts with my WiFi can lights to show when my garage door is left open. Works like a charm with IFTTT and I also use the WiFi switches which are the best!

Kevin Mitchell
Excelente. Está funcionando

Gostei, estou usando a minha na porta da entrada de casa e uso ela com a Alexa! RECOMENDO! Fácil de instalar e configurar!

SONOFF DW2-Wi-Fi - Wireless Door/Window Sensor
    Your Cart