Hello from London

Hi has RELB5HD, with 4 on board relays.
Heavy Duty Relay Board with • All TTL +5VDC or +3.3VDC Signals.
Interface directly with parallel port interface products and other controls 5VDC (TTL) signals are very common among automation devices.

• Works With the Parallel Port Board.
Connect easily with the Parallel Interface Board, or any port pin.

• Works directly with popular CNC hardware and software. . Such as Rhonmac-cnc, Geckodrive, Desk CNC or Rutex, and parallel port control software, such as Mach2 and Mach3, Linux EMC, Turbo CNC, CNC Player and others (Not all tested)
Data Sheet
• Controls 4 AC devices per card. • Output at 230 3 x 5 amp relays and 1 x 15 amp relay .
• Independent fuses for each connection.

i will ask him for more info.
thanks
Thomas