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Door & Window Sensors

An open/close sensor attaches to a door or window frame and signals when it is opened or closed. Shelly Bluetooth models are battery-operated, small, and require no work. For hosts, they are useful for knowing if the guest closed the front door when leaving, or if a window was left open with the heating on. Together with other Shelly devices, they can trigger automation, such as turning off the air conditioner when a window is opened. They are fixed with adhesive, without holes in the frame and without cables to run.