D3 is a WIFI Fingerprint Smart Door Lock,its app name is UsmartGo.it is popular because of elegant design and stable quality.D3 has built-in doorbell function,when vistors ring doorbell,we can see who is standing in front of your doors.this bring you higher security.D3 support fingerprint,cards,password,mechnical keys and App to open doors.
| Material | Aluminum |
| Process | One-piece molding + baking varnish |
| Color | Grey/Coffee Gold |
| Cylinder level | C level |
| Password capacity | ≤100 groups |
| Fingerprint capacity | ≤100 |
| System | Fan Hai San Jiang |
| Fingerprint head | OFILM (semiconductor) |
| Battery type: | lithium |
