keypad door lock/electric doorlock/code door lock (GT-016)

Product Description:
1 Cast alloy integrative structure, firm and durable.
2 Master code can be used to add or delete any user codes.
3 Very easy to install, operate and program, Especially suitable for installation by non-professionals.
4 Suitable for offices, homes, computer rooms and more (Fits existing door knob openings).
5 Pure stainless steel mechanical rotating structure enable for using more than 10 years.
6 Power: Using 4 x 1.5V standard alkaline batteries, very easy to change.
7 Battery life exceeds 15, 000 uses under ordinary use.
8 Free rotating handle to avoid violent damage when it keeps un-working state.
9 One-key opening function: Freely press any key to open the lock.
10 Master Code can set valid time period for all user codes to unlock.
11 Input wrong passwords for three continuous times, it will stop for 10 seconds without any operation.
12 Automatic lock after unlocking in 5 seconds.