> For the complete documentation index, see [llms.txt](https://navixy.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://navixy.com/docs/user/guide/devices-and-settings/location-and-movement/ignition-source.md).

# Ignition source

Tells the Navixy platform how to determine ignition on/off, important when the ignition wire isn't connected. Many devices can derive ignition from a digital input, the vehicle's on-board voltage, or the built-in motion sensor.

![](/files/VKiDQStULZrtUdBP91sn)

## Settings

Select the **mode** used to detect ignition:

* **Digital input**: uses a specific input pin, typically the ignition cable. The default on most devices.
* **On-board voltage**: detects ignition from the vehicle's voltage. Set the **low and high voltage thresholds** in millivolts (0–30,000, default around 13,000 mV). Voltage above the threshold means the engine is running, because the alternator raises system voltage when the engine is on.
* **Movement or motion sensor**: infers ignition from vehicle movement, useful when the device isn't wired to the vehicle's electrical system.

## Availability

Appears on devices that support configurable ignition detection (vendor variants exist, e.g. Teltonika, Suntech, Ruptela, Queclink).

## Limitations

* **Voltage mode** works because a running engine's alternator raises system voltage above the battery's resting level; set thresholds to match your vehicle's actual voltage range.
* Motion-based ignition is convenient when not wired to the vehicle, but towing reads as ignition-on (the engine isn't actually running).

## See also

* [Ignition source (discrete sensor)](/docs/user/guide/devices-and-settings/vehicle-sensors/discrete-sensors/ignition-source.md): creating an ignition sensor on the platform (distinct from this device-side detection mode).
* [Parking detection](/docs/user/guide/devices-and-settings/location-and-movement/parking-detection.md): can use ignition to confirm parking.


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