Double cylinder lock case with an automatically deadlocking latchbolt. The latchbolt protrudes 21 mm. The lock is opened with a key or a thumbturn. The lock can be used in doors, which should be deadlocked always when they are closed. LC120X is the microswitch version of the lock. The switchchanges it’s status when the latchbolt protrudes 15 mm or more. Striker plates 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 Yes