6 Digits Password For Enhanced Password Strength (Register Upto 300 Unique Passwords). Low Battery Indication Function Alerts You In Advance To Replace The Battery. In Case Of An Emergency The Lock Can Be Opened With A Mechanical Key. Eliminates The Hassle Of Manually Locking The Door. Alarm Goes On If The Password Is Entered Incorrectly 3 Times In A Row. Register Up To 300 Cards For Multiple User Access. Connect Your Phone With Lock Via Bluetoth And Unlock The Lock By Your Phone. Android & Ios Plateform Supported, You Can Unlock The Lock By Android Or Ios Phone. You Can Register Upto 300 User According To The Your Choice In Passcode, Rfid Card Or Fingerprint. Voice Guide Available For Users. You Can Import Detailed History Of All Users Login/Logout. It Can Be Operated By External Power Supply In Case Of Low Battery.