Maximum 120 fingerprints

Add a new user in seconds

No computer programming required

No keys to hide, carry, lose or forget

Appropriate for door thickness: 30mm-60mm

3 different ways to open: fingerprint, password and mechanical key (for emergency use)

Powered by 4* batteries or 6V~9V external power

Warming beeps and red indicator lights when the battery is low

Suitable for indoor doors, best substitute for knob locks