Understood, and apologies for the ambiguity of my statement. This product has been a major pain in the ass for us and despite several phone calls and emails I have only been able to get the same info as MrPUK.

By doesn't work I mean that the LED flashes to indicate a command has been received but there is no response. I appreciate that with the information you have available that is of little help though.

Thanks so much for your input anyway. At least with the discrete on we can apply some logic to the programming to simulate a discrete off.