Brand Name: Prime-Line
*Width: 1-5/16 in.
*Length: 2-3/16 in.
*Diameter: 3/4 in.
*Material: Plastic
*Product Type: Electric Key Switch
*Packaging Type: Carded
*Number in Package: 1 pk
*Color: Silver
*Application: Allows Operation of Garage Door Opener without a Transmitter
*Mount to Exterior Door Jam and Hard Wire to Opener
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* Rated at 24/36 Volts Max
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* Uses Yale Y-11 Key Blank