Your Sensor
What the light colours mean
The SANDIT Sensor has one light and no screen, so the light carries every status message. Here is the full vocabulary.
While it is on
| Light | What it means |
|---|---|
| Off | Switched off, or in standby. Not recording and not connected. |
| Blinking red | Recording a session. A short press stops the recording and switches to sync mode. |
| Pulsing blue | Sync mode: ready for the app. Open the app and tap SYNC. A short press switches back to recording. |
| Solid blue | Connected to your phone. |
| White | Transferring a session over the sensor's own Wi-Fi. Keep the app open. |
| Purple | Installing a firmware update. Leave it alone until it finishes. |
| Fast flashing red | Something is wrong inside the sensor. A short press switches it to sync mode so the app can reach it. If it keeps happening, mail crew@sandit.club. |
On the charger
Pulsing purple means it is charging. Green means it is full.
Green only appears once the battery is convincingly full, and it stays green until the charge drops meaningfully. That deliberate lag is why you will not see it flicker between purple and green near the top of the charge.
Patterns when you switch it on
- Breathing red. Normal start-up. As soon as it is up, the sensor starts recording and the light blinks red.
- Breathing purple. Starting up while sitting on the charger.
- Breathing blue. Starting up straight into sync mode.
- Three fading red pulses, then dark. The battery is too low to start. Charge it.
- Pulsing amber. You are holding the button and the sensor is waiting to see if you keep holding.
Three descending red pulses are deliberately different from a hard cut to darkness. Fading pulses mean the battery is flat. An abrupt blackout means something went wrong, so mail crew@sandit.club if that happens repeatedly.