C&K 121 compact rotary keylock switch features 3 positions and contacts rated 0.4V @ 20V. Panel mounts in a 0.75" hole. Size is 0.73" diameter x 0.638" deep (excluding terminals). Contact arrangement is as follows:
Position 1 - Key can be removed only here
Terminal Ø & 1 Connected
Position 2 - Key can't be removed
Terminal 1 and 2 Connected
Position 3 - Key can't be removed
Terminal 2 & 3 Connected
Made with precision - retails for many times our price. Brand new in sealed bag with panel nut and one miniature key.