Notes:
| Status | LED Color | Behavior |
| Power ON | White | Solid |
| Power OFF | Rainbow | Dimming |
| Charging | Red | Illuminating |
| Fully charged | Green | Illuminating, then turns OFF |
| Low battery | Red | Flashing |
| Bluetooth standby | Blue | Flashing |
| App connection in progress | White | Dimming |
| Low storage | Yellow | Flashing |
| Firmware update in progress | Blue | Dimming |
| Firmware update failed | Orange | Flashing |
| Optical sensor issue | Pink | Solid (with alarms) |
- Dimming means the light slowly pulses between dark and bright.
- Optical sensor issue: Check for dirt around the sensor or on the paper surface.