SECO-LARM SS-095-1H1 High Security Tubular Key Lock Switch, Commonly Used for Momentary Arm/Disarm Alarm Inputs or Other Applications Requiring High-security&nbsp;Momentary On Momentary ON/shunt OFF 2terminals, SPST Maintained OFF, springs back from ON, key removable fromOFF only Commonly used for momentary arm/disarm alarm inputs or other applications requiring high-securitymomentary on 12VDC, 2 Amps max. 1301Key Number, Extra Keys