Password Cabinet Door Locks

Key Specifications/Special Features:
Use codes to open door, no need to use cards or keys
After entering the code, turn handle to unlock lock
Also have two types: public type (open type) and private type (stand alone type)
Two grade manage: master code and user code
Also can make to three grades manage: super master code, master code, and user code
Low power alarm: when batteries have not enough power, lock will show an indication
Emergency open: when batteries have no power and can't open lock, an external power supply source can be used just insert into a socket of lock to supply power to open lock