The state-of-the-art Fingerprint Lock offered by us are a perfect solution for key less entry. Some of the well known features of this product are :German Style: Integrated cast steel and stainless steel finish,Operated by four AA standard alkaline batteries,Unlocking: Mechanical key for emergency or Fingerprint, PIN/Code Total 120 fingerprint users. Easy to add and empty the fingerprint template. PVD coating glass surface of optical fingerprint sensor.