High quality electronic hidden door handle lock
Codes can be consisted by a 1-15 digits, billions of combinations available
Codes can be set and changed by users, and memorized automatically when power off forever
Easy operation and more security
You can apply for management codes when you forget your own individual codes, press back button to restore factory setting
Emergency battery can be applied when battery is out of power
Auto-alarm will be activated when input wrong codes 4 times
Energy-saving design, 4 pieces AA batteries can be used for one year, automatic power shortage prompts
Audited Supplier 
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