Mechanical Heat/Cool Thermostat
1 heat / 1 cool Mecury free mechanical thermostat. For use on: Most 24V heating and A/C systems. 1 stage heat/1stage cool: gas, oil, or electric systems. Single stage heat pumps. 2 wire heat only hydronic systems(hot water baseboard & radiator). Not to be use on: 3 wire hydronic system, sytem without built-in compressor time delays.
