On/Off Round Key Lock - 12mm Diameter
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MAJOR KEY ALERT we now stock 'Key Lock Switches'! These mechanical switches don't use a button, lever, or magnet to open and close the contacts. Instead, a literal key is used. This low-cost but effective key lock switch is nice and compact: you only need to drill a 12mm / 0.5" diameter hole in your mounting plate.
Insert the 'bike lock' style key and rotate it clockwise; now, the two contacts on the back are electrically connected. Rotate it back counterclockwise to disconnect the switches. You can remove the key in either position. It makes for an excellent 'On-Off' switch that requires the key to activate
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