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# Factorio Runtime Docs Version 2.0.7

## SignalID :: table

#### Table fields

type | :: SignalIDType? | The type of the signal. If the type is `"item"`, this will be `nil` when reading.
The type of the signal. If the type is `"item"`, this will be `nil` when reading.
name | :: string? | Name of the prototype.
Name of the prototype.