The 6036 offers flush mount installation, a large black lit vertical touch screen, 7 day programmability, ECO Optionscompliance, hold and override functions, filter alert, calibration and more. Simple touch screen operation. Works with most milivolt to 24V single and multistage heating /cooling systems, heat pumps with auxiliary heat, zoned baffle systems, 3/2 wire hot water. Ritetemp 6036 Flush mount