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Keypad / Keyless Digital Door Lock

We are a leading manufacturer of the digital door lock located in Korea.
Keyless door lock security - our model ark-key.
It has universal applications - ideal for the fireproof steel, wooden and tempered glass(single &double) doors. Program the digital door lock with your pass code of up to 20 digits long and gain access by simply punching in the pass code to unlock the door. Programmed to open by entering even any random imaginary number prior or/and posterior to pass code, never reveal user's pass code to nearby person when pressing buttons.
If you get it from us, you can count on it to protect you and your loved ones, your home, apartment or dorm, and your business--for years to come.
1) integrated performance
Automatic open/close along with security guard performances.
2) universal application
Used for both fireproof steel &wooden doors and tempered glass(single &double).
3) sliding cover
Safe protection from water when raining or cleaning, dew caused by changes of temperature/humidity and pollution or damage to exposed keypads.
4) convenient handling
Very easy to install, operate and program. Just one-touch operating.
5) diverse functions for user's convenience
Backlighting for use at night. Beef sound identifying keypad entry and setup function.
6) pass code entry
Used 4~20 digits for pass code. Modify easily by user's want anytime.
7) protection pass code from nearby person when pressing buttons
Programmed to open by entering even any random imaginary number prior or/and posterior to pass code. Never reveal user's pass code to nearby person when pressing buttons.
8) tamper proof
Siren alarm to invalid entry 3 times in a row.
9) auto re-lock function
Automatically lock the door within 5 seconds of being closed when automatic mode.
10) indoor double lock function
Preventing someone from opening the door from the outside even if in possession of pass code.
11) outdoor double lock function
When set up this function from outside, the indoor 'open' button doesn't work.
12) long lasting by minimizing battery consumption
Based on 10 times operating a day,6 pieces AAA alkaline 1.5v battery can be used for 2 years(7,300 times) by using keypad and for 3 years(11,000 times) by remote control.
13) low battery alert
Notice battery replace time by melody. After alerting low battery, can be used for 1 month.
14) emergency power supply
When battery is discharged completely, can be opened by connecting 6~12v battery to the terminal of emergency power supply, which can be bought from public market.
15) perfect emergency measure
In case electronic device doesn't work, can be operated manually from inside and by remote control from inside and outside of door.
16) I/R remote control
Besides keypad, can be operated by I/R remote control from outdoor saving battery life.
17) self-diagnostic function
Notice malfunction and battery replace time by alarm.

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