Is there something specific you are wanting to use the 0-10v input for. I have float switches hooked to the sense ports. If it is to enter a mode that has to be a 0-10v input, but it is probably possible to do what ever you want without entering a mode using a switch on the sense port to do it. If you let me know what you are interested in doing I can give it a try on my system.
Thanks very much for your offer, however, the reason I am interested in the 0-10v input is that you can effectively add up to 4 inputs (a total of 20 on/off switches) to the one port, as far as I am aware. Examples of the sort of thing I would be looking at are:
Channel 1
1) Push button switch for feed mode.
2) Push button switch for maintenance mode.
3) Toggle Switch for emergency shut off mode.
Channel 2 and 3
4) Air temp and humidity sensor.
Channel 4
5) Float switch to tell me that the return pump chamber is getting low.
I think I could do all of that with one 0-10v port. Aside from possibly the temp and humidity sensor, I believe that I could do everything else with sense ports instead, but I would need to buy another Control XS unit to make up for that one 'missing' port.
I don't need all of those options at the moment, but it would be great if there was a smaller form factor controller (i.e. the same size as the X3 rather than the Control 4) that had the 0-10v option, to enable future expansion without having to buy more controllers.
I would be interested to know how many people use both drive ports on the Control 2. One is useful for the ATO pump but do many Control 2 owners use the second port? Would there be more demand for that second port to be 0-10v instead (I genuinely have no idea of the answer)? If that option was available then I could use a collective of one X3 and one other small form factor controller. That combination of 2 small form factor controllers would end up being similar to a Control 4, but with only 1 probe and one drive port and no 0-10v out, and that would be ideal for me.
There is obviously a limit to the number of SKUs that Hydros can produce, so not all port options can ever be available. It would be amazing if it could be customisable, and you could select what ports you want when you purchase it, but I suspect this would be impractical from a business sense. The other option, which I know goes against the philosophy of Hydros, would be to offer port expansion modules.
In the meantime, whilst I am dreaming of the future, I have to decide whether to compromise with a X3 or shell out for the Control 4, both of which can be made to work but neither of which really fulfil my requirements.