Features:
1. Material: Zinc alloy;
2. Finish: Stainless steel brushed;
3. Card + password combination unlocking is optional;
4. System will be locked for 3mins after 5 continuous wrong input;
5. Cylindrical latch is easy for old door renovation;
6. Keypad tone can be turned off;
7. 4~6 digits of password;
8. User capacity: 30 passwords+ 100 cards (expandable);
9. Mechanical key unlocking is available for emergency.