The 1006 series faceplate is perfectly designed for use with Mortise locksets with a 1" deadbolt with a deadlatch positioned below the latchbolt. Its operation is such that the electric strike will not release if the deadbolt is extended. The deadbolt is retracted during traffic hours and the latchbolt is retracted by the keeper, whereas the keeper returns to the locked position. The HTD Series faceplate is to customize the functionality of the 1006 series electric strike.