... SAS6000UTK-7..is powerful programmable room thermostat, used in single stage, 3Heat/2Cool multi-stage. Compatible with gas, oil, heat pupp or ... electric heating systems. It is used in single stage, 3Heat/2Cool multi-stage. Compatible with gas, oil, heat pupp or ... .Apply with various kind of heating and cooling system. Including Single stage, Multi-stage3.And Heat Pump (Up to 3-stage heat ...