Bought this for my son's BP, but I've discovered that the location of the enclosure for this guy (combined wiht it being glass) is really driving me to need to control two heat sources, and under tank heater, and a CHE. So, rather than buy a second controller, I'd rather try to sell this one and buy a 2 channel one. Paid $140 for it, will let it go for $100. Still have the box and paperwork for it, as well.