Hi Dave.
The IR looks identical to the MCL IR, but it's not the same.
It has a 6 pin DIN lead, but only pins 1,3+5 are used. The number on mine, is 8712009.
Be careful that you get the polarity right with your power source. The center is positive,
If you have two boxes, they link together by a special cable which carries the power source too, so you only need one.
You can then use numbers 1 to 16 (this is why there is a 3 second delay, to give you chance to press a second digit)
Andy T.