The lock can be opened either with a key (outside and inside) or by using an emergency thumbturn. The lock case functions similarly to the LC301, but there is no sliding snib. Automatic deadlocking when the door is closed. Microswitch version. The switch changes it’s status when the latchbolt is fully extended. The lock case works with the 4613 and 4614 striker plates. Fire resistance: EI 120.
