It works with a control box to control up to four single stage air conditioners or heat pumps and up to two furnaces. The coleman mach 8330d3351 is a replacement 4 stage zone control digital rv thermostat. 4 7 out of 5 stars.
The Rv Comfort Thermostat Controls Your Air Conditioning And Heating System To Operate The Two Zones Push Systems Which Will Thermostat Heating Systems Rv
