Lock case with an automatically deadlocking latchbolt. The deadlocking is controlled by a snib in the forend. Snib position: UP = Deadlocking, latchbolt protrudes 21 mm. The lock can be opened only with a key or a thumbturn. DOWN = Latchbolt protrudes 14 mm. The lock can also be opened with the lever handles. 4190X is the microswitch version of the lock. The switch changes it’s status when the latchbolt leaves its day locking position, i.e. the bolt protrudes 15 mm or more. 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 – EI160 and EI215 – EI260, Metal doors EI115 – EI1120 and EI215 – EI2120 Mortise standard SFS 5209.