Smart Door Knob Lock Biometric Fingerprint with Passcode Keypad , Card ,Mobile App and Mechanical key

Smart knob door lock  single latch suitable of most of doors great for rental properties Airbnb , hotel , Apartments , residential and commercial properties. Stylish new design placed fingerprint  reader on top so can be easily reached.    Material Aluminum Alloy Surface Treatment Anodization Color  Black / Red Bronze Unlock Method APP / Fingerprint / Card / Password /Key Supported APP TUYA  Capacity 120 fingerprints, 150 passwords, 200 cards Fingerprint Sensor 500DPI FAR/FRR 0.1% / 0.001% Reading Time ≤ 0.5s Power Supply 4 AA alkaline batteries  Back-up Power USB for external charge for emergency  Work Temperature -40ºC ~ +70ºC Door Thickness 35 - 65mm           1.38" -  2.56" inch -  Material Aluminum Alloy