Amazon.com: SECO-LARM SS-095-1H1 High Security Tubular Key Lock Switch, Used for Momentary Alarm Arm/Disarm, Momentary ON/shunt Off 2 Terminals, SPST; Maintained Off, Springs Back from ON, Key Removable from Off : Industrial
ALARM SYSTEM KEY SWITCH (ROUND KEY) MAINTAINED, 2-KEYS, SPST 4AMP@125, ON & OFF | eBay
Dortronics 7281-EAxK332 Door Exit Alarm w/ Key Switch Reset - KAL DOOR HARDWARE