Sonoff DW2 Wi-Fi Wireless Door Window Sensor

*This is sensor, no sound

Sonoff DW2 is the upgrade version of DW1 which come with Wifi wireless function. NO gateway required anymore to connect the door window sensor. The sensor is pair via bluetooth and control on eweLink app via wifi.

Features:
Remind you when your door opened or closed.
Directly pairing with Ewelink app, no need a hub or gateway
Sync status: Monitor the status(open or closed) of your door/window.
Share control: Share the device to your family members and track the history of sensor activities
Always know your home is safe: The sensor will send you a push notification immediately if someone is detected to open your door or window.
Made smart in action: Create Automation Scene for your other ewelink devices.
Low- battery reminder: There is a reminder on App if the battery level of sensor is low.
Go back to history records: Automatically save message notifications. You can check history records over the last 3 months.

Easy installation: Tool-free installation. Adopts 3M adhesive on the bottom of the sensor for easy installation.
*Make sure the installation gap is less than 5mm when the door or window is closed.
*Wifi sensor might have 1-2seconds delay on update the status due to it needs to connects to the internet, make sure your wifi signal is strong.

Specification:
Battery model: AAA 1.5V
Working voltage: DC 3V (2 x 1.5V battery)
Wi-Fi: IEEE 802.11 b 2.4Ghz (Please ensure your router is supporting 802.11b)
Operating systems: Android 4.1 & iOS 9.0 or higher
Material: PC
Working temperature: -10°C – 40 °C
Installation gap: <5mm
Quiescent current: ≤ 40uA
Emission current: ≤ 15mA
Battery life estimate ~3months (maybe varies, depends on usage) can see battery level in the app.

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