Hi Piers, It sounds like you're very capable of integrating this into your humidity control system but be aware (and you probably are) that you will need a 5vdc power supply, a humidifier and the wiring. Also, you will need a sensor for the %RH so you can set the potentiometer on the PC board to the correct setting. I actually have some of these that I bought thinking that they were a good low-cost solution for humidity control but we ended up going with the Willhi controller for our CCRH. If you haven't bought the module yet I would be happy to mail one or two of these to you free of charge (just message me with your address).