Product details:

The CL415 is a medium duty tubular Mortice latch with Code Free entry option. The outside lever handle will retract the latch after a correct code is entered. In Code Free mode the outside lever will retract the latchbolt without using a code. The spring loaded latchbolt will lock automatically when the door is closed. 8, 191 combinations available. Full size lever handles. Door thickness: 35mm - 65mm (1 3/8 in - 2 1/2 in).