Thank you MikeMI, alec_t and ci139. I appreciate you taking the time to respond to my question.
To answer you all, I have searched the internet for a solution but not come up with anything simple and cost effective. If there is a previous post on this forum, please direct em to it and I apologize for re-posting.
MikeMI
Yes, you are correct, i is a simple NO-C-NC relay (two in parallel actually). With the pushbutton, I have not measured the voltage as I was more concerned with having the correct pulses, with which I could use an optical relay to drive. I will measure the voltage today and get back to you. In terms of supply voltage, again I will measure today and see what is available from the unit, otherwise I am happy to use a separate power pack of 5, 9, or 12 Volt.
alec_t
I'm not sure of the timings, really wanto to simulate pressing a button two times (it clicks), so the signal would depend on what it is driving to achieve the 'pulses' and as mentioned above I will measure the Voltage and get back here (and to see if an optical relay is required).
ci139
Timing is not critical in this case, delays of several seconds are completely acceptable.
Thanks again,
Alex