# Engine hours

## API actions

API base path: `/tracker/stats/engine_hours`.

### read

Returns engine hours counted for the specified period.

#### Parameters

| name        | description                                                                                      | type                                                                   | format                |
| ----------- | ------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------- | --------------------- |
| tracker\_id | ID of the tracker (aka "object\_id"). Tracker must belong to authorized user and not be blocked. | int                                                                    | 123456                |
| from        | From date/time.                                                                                  | [date/time](/docs/navixy-api/user-api/backend-api.md#datetime-formats) | "2020-09-24 03:24:00" |
| to          | To date/time. Specified date must be after "from" date.                                          | [date/time](/docs/navixy-api/user-api/backend-api.md#datetime-formats) | "2020-09-24 06:24:00" |

#### Examples

cURL

{% code overflow="wrap" %}

```sh
curl -X POST 'https://api.eu.navixy.com/v2/tracker/stats/engine_hours/read' \
    -H 'Content-Type: application/json' \
    -d '{"hash": "22eac1c27af4be7b9d04da2ce1af111b", "tracker_id": 123456, "from": "2020-09-24 03:24:00", "to": "2020-09-24 06:24:00"}'
```

{% endcode %}

#### Response

```json
{
  "success": true,
  "value": 42.0
}
```

#### Errors

* 204 – Entity not found - if there is no tracker with such ID belonging to authorized user.
* 208 – Device blocked - if tracker exists but was blocked due to tariff restrictions or some other reason.
* 211 – Requested time span is too big - if interval between "from" and "to" is too big (maximum value specified in API config).
* 214 – Requested operation or parameters are not supported by the device - if device does not have ignition input.
* 219 – Not allowed for clones of the device - if specified tracker is a clone.


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