How to install smart lock M2:
https://www.youtube.com/watch?v=f-DQIrmAuxk&list=PLeQFzh3LX33-0TwktSh_cjS47iO6oVTr_&index=9

| Item code | HC-M2 |
| Material | Zinc alloy |
| Image pixel | 160*160 |
| Type | Bluetooth |
| Unlocking | Fingerprint+Password+TT lock+card+key |
| Availability | Android 4.3/IOS7.0 and above |
| Unlocking Efficiency | ≈1.5 seconds |
| Battery | 4pcs AA Alkaline battery |
| Working Current | Less than 200 mA |
| Voltage Range | 4.5~9V |
| IC Card Capacity | 200 pcs |
| Range of Working Temperature | -20~70℃ |
How to install smart lock M2:
https://www.youtube.com/watch?v=f-DQIrmAuxk&list=PLeQFzh3LX33-0TwktSh_cjS47iO6oVTr_&index=9
