This is product manufacturers code UCF-RWS by Leyton Lighting. If you need to contact us about this product, please quote our product reference of 917.
This T5 socket, is re-wireable, (i.e. it's not sealed) so it can be used to make custom-length T5 link leads.
The socket is used to supply power to each T5 fitting. It connects to the built-in 'plug' at the end of each fitting. Re-wireable plugs are also available to allow you to make T5 link leads of any length.