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This Sonoff DW1 is a door and window alarm sensor. The DW1 door alarm sensor detects the opening status and immediately sends alarm notification message to the app via the Sonoff RF Bridge 433.
The sensor works in conjunction with the Sonoff RF Bridge device, a radio module that receives signals from the sensor at a frequency of 433.92 and converts them to Wi-Fi, with a home private network. The module provides communication of the device with any gadget connected to the Internet and configured to work with the device.
For management and control of the sensor it is necessary to install on the smartphone or the tablet the eWeLink application which can be downloaded from app store of Playmarket for Android or from iTunes for iPhone and iPad. With this application, you will know exactly when the door or window opened at what time, how long they remained open. To operate the sensor, it is necessary to install the battery, it is enough for several years, it is a very economical sensor.
Frequency: 433.92 MHz
Radio module: EV1527
Power supply: 12V battery
Transmission distance: up to 200 m
Weight: 24 g (sensor), 10 g (magnet)