Outside Functions IC-chip included key. Using Touch code key and secret number coding system. One-touch system. Convenient registration and deletion of key information. Convenient registration of secure number. Automatic door locking system IN and OUT double locking system. Crime prevention systems Specifications Latch Backset: 70mm Latch bolt 1/2” (12.7mm) Brass Dead bolt: 1” (25.4mm) Brass Front 25x110mm Strike 35 x 105.7mm. Door thickness 35 x 45 mm Finish Silver, Gold Packing.