PG-206K Metal Digital Keypad uses microcomputer processor which makes system steadier. With million combinations of key code, it is safe to open the door by key code and no key needed. This keypad supports door monitor, door release time control and other alarm functions. Beside, It can work with burglarproof or safety systems.   PG-206K:Metal digital access control keypad，1~7 door codes PG-206KC: Metal digital access control keypad，1~150 door codes