OK, this will do the job:
http://www.ebay.com.au/itm/New-Stepp...item416cd2f1bb
or this:
http://www.ebay.com.au/itm/Stepper-M...item256ece073f
Actually, it can drive 4 relays from intervalometer independently
But, you still need to do some additional wiring on that board (soldering.. and adding a resistor or two).
If you are comfortable with this, or if you can find someone to help you, I will post the schematic later - it involves adding one resistor, adding one short wire and cutting one track on that board.