# getFieldInfo(source)

Return detailed information about field (source)

The list of valid sources is available:

| OpenTX Version | Radio                                                                                                                                                                                                                                                                                                                        |
| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 2.0            | [all](http://downloads-20.open-tx.org/firmware/lua_fields.txt)                                                                                                                                                                                                                                                               |
| 2.1            | [X9D and X9D+](http://downloads-21.open-tx.org/firmware/lua_fields_taranis.txt), [X9E](http://downloads-21.open-tx.org/firmware/lua_fields_taranis_x9e.txt)                                                                                                                                                                  |
| 2.2            | [X9D and X9D+](http://downloads.open-tx.org/2.2/release/firmware/lua_fields_x9d.txt), [X9E](http://downloads.open-tx.org/2.2/release/firmware/lua_fields_x9e.txt), [Horus](http://downloads.open-tx.org/2.2/release/firmware/lua_fields_x12s.txt)                                                                            |
| 2.3            | [X9D and X9D+](http://downloads.open-tx.org/2.3/release/firmware/lua_fields_x9d.txt), [X9E](http://downloads.open-tx.org/2.3/release/firmware/lua_fields_x9e.txt), [X7](http://downloads.open-tx.org/2.3/release/firmware/lua_fields_x7.txt), [Horus](http://downloads.open-tx.org/2.3/release/firmware/lua_fields_x12s.txt) |

@status current Introduced in 2.0.8, 'unit' field added in 2.2.0

## Parameters

* `source` can be an identifier (number) or a name (string) of the source.

## Return value

* `table` information about requested field, table elements:
  * `id` (number) field identifier
  * `name` (string) field name
  * `desc` (string) field description
  * 'unit' (number) unit identifier [Full list](https://luadoc.edgetx.org/2.9/appendix/units)
* `nil` the requested field was not found