R2 Parameters
| Control method | YEEUU Smart APP & Tuya APP |
| Fingerprint capacity | 50pcs |
| NFC capacity | 100pcs |
| Recognition time | <1s |
| Gateway | support |
| Endurance | Open the door 10 times a day, the battery life is more than 1 year |
| Battery | 2 AAA batteries |
| Operating voltage | 2.5~3.3V |
| Average current | 40μA |
| Max working current | 310mA |
| Working humidity | 40% RH ~ 80% RH (non-condensing) |
| Operating temperature | -20 ° C ~ 70 ° C |
| Color | Black |