Cylinder lock case for emergency exits. The latchbolt deadlocks automatically when the door is closed, protruding 21 mm. The lock case is suitable for use with a double cylinder and an emergency exit thumbturn. The bolt is opened with either the key or the emergency thumbturn. LC193X is the microswitch version of the lock. The switch changes it’s status when the latchbolt protrudes 21 mm. Following striker plates are recommended to be used with a microswitch locking box: 4692, 4693. Striker plate: 4690, 4691, LP711, LP714, LP721, LP731 Cylinder: ABLOY® C, N, T, U Fire resistance: Wooden doors EI115 - EI130 and EI215 – EI230, Metal doors EI115 - EI11120 and EI215 – EI2120 Mortise standard: OneFit mortise