Details

LED and buzzer indicates :

Two-color LED: red and green:

NO Led State Access control status

1 light red once every 1 sec (Slow flash) Holding state

2 light red, N.O. Programming state

3 light green within Open time Unlocking state

4 light green once every 0.3sec (Fast flash) Pending further action

Built-in buzzer

Standalone Reader Description Status :

*Metal Case 1 short buzz Valid input

3 short buzz Invalid input

1 long buzz Program success

Continuous long buzz Restoring factory programming passwords