The tone alarm plays tunes to indicate various states.
| Description | Sound |
|---|---|
| Start up OK | sound |
| Start up Failed | sound |
| Armed | sound |
| Disarmed | sound |
| Failed to arm | sound |
| LEDs | Behaviour |
|---|---|
| Power | Solid green when powered |
| GPS lock | Flashing blue when GPS lock is acquired |
| GPS unlock | Blue LED off |