I got one of these with the idea of controlling either the fan on my heat pump to circulate heat or a seperate 120 volt fan, by placing the sensor near the discharge of the convection fan tubes. But after bench testing it, I may use it to control my CB1200i directly. It has a wired remote temperature sensor that is 8 foot long and can be extended to 200 feet. It has a programmable temperature swing that I haven't been able to find in a "normal thermostat". It can be set to swing how ever many degrees you want. It can be hidden from view with only the sensor being exposed to sense temperature. Its a little pricey compared to a thermostat but it has a lot of potiential. Another thing I thought of doing with it , is to use it to use outside air temperature to to control a thermostat so when it gets cold enough the pellet stove is the primary heat and when it warmer the heat pump does the work. Any thoughts?
http://www.etcsupply.com/ranco-etc111000000-digital-temperature-controller-p-86.html
http://www.etcsupply.com/ranco-etc111000000-digital-temperature-controller-p-86.html