White-Rodgers mechanical thermostat is perfect for your needs if you want a fuss free, simple and Heating Thermostat. The thermostat allows you to read the set-point temperature, but also the actual temperature being sensed in the home. You can manually set the temperature with this thermostat by just moving the latch from right or left. This product is mercury free and works with Single-Stage Standard Heating Systems. This thermostat also works with 24 Volt and Millivolt Systems- floor or wall furnaces. Compatible with gas or oil heat, electric furnace, hydronic ( hot water) zone heat- 2 wires. White-Rodgers is a business of Emerson Climate Technologies, the world's leading provider of heating, ventilation, air conditioning, and refrigeration solutions for residential, industrial, and commercial applications.