The EV-DW4975 is the industry's thinnest supervised door/window contact allowing a multitude of applications while hiding the transmitter on a door or window frame. The EV-DW4975 uses a replaceable lithium battery and should last 5 years under normal usage.
Specifications:
Frequency: 433.92
Operating Temperature: -10C - +50C
Battery Life: 5 Years
Battery Type: Panasonic CR2032
Dimensions: 2 1/4 in. x 1 in. x 3/16 in. (L x W x D)
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