The Alpha® T20 and Alpha® TT25 dog collars will display different light sequences to let you know the status of the collar while in use or during charging.
Light Sequence in Use
| Yellow Blink | Acquiring satellite reception |
| Green Blink | Acquired satellite reception |
| Rapid Blue Blink with Tone | Collar in pairing mode |
| Blue Blink | Paired with an Alpha LTE collar |
| Solid Red | Training command being received |
Light Sequence in Sleep Mode
| Purple Blink | Collar in sleep mode |
Light Sequence on the Charger
| Solid Red | Charging |
| Solid Green | Charging Complete |
Light Sequence Updating Software
| Solid Red | Connected to Computer |
| Flashing White (Approx 30 seconds) | Completing Software Update |