The DMX DIN Relay Module is a 4 width module and clips to a standard DIN mount rail such as those in a consumer unit.
All you need to provide is a 12 V power supply and a DMX signal and you're ready to go.
Each of the 4 built in relays is capable of switching 250VAC @ 16A.
By connecting an exapnsion module, or up to 4 individual, relays you can easily expand the capabilities of this module to 8 channels.