Features:
* Touch pad: sleep mode for lower power consumption; activated upon touch
* Passwords can be four to 12 digits
* 9V DC battery for emergency power supply
* Electric shock-proof; fire-proof
* Trespassing alarms and double locking
* With backlight and mechanical emergency key
* Fingerprint recognition function, voice and beep modes
* Fool-proof: suspend all actions for three minutes after three times of wrong password intups