Plug and play The window contact switch set has been paired, only 2 x AAA batteries (not included) must be inserted into the wireless sensor to be used
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Two control methods You can turn the device on or off according to your own needs when you open the door, and it can be used in a variety of usage scenarios
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Easy to install Can be glued directly with double-sided strong adhesive or fixed with screws, simple and easy to use without worrying about falling off
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