Main Features :
● Setting on Master mode or Non-Master mode
● Setting on Guest mode or Private mode
● Setting on Auto-locking or Manual locking in Private mode
● Registering 4 digits as password(Master password and User password)
● Opening the lock with 9V when the battery is dead.
● Battery exchange time alarm function
● POWER 6V (alkaline battery 1.5V X 3ea, 2A size)