1) Can support 250 users.
2) Support 2 to 8 digits passwords
3) One administrator password,if lost the password, can be reset to ex- work password.
4) If input error password 3 times,keypad locked and voice alarm.
5) Open-door-time can be programmed 1 to 99 seconds.
6) Door-status-check, if door is not closed properly, system will automatically voice and light.