White Rodgers 37-1752-2 is a low voltage room thermostat for heating, cooling, and combination heating-cooling models. It is heat-anticipated to provide greater room comfort and is operated by a sensitive spiral bimetal. This thermostat is available with either sealed mercury contacts or with snap-action contacts. The snap-action contact models come equipped with a plastic dust cover. Both horizontal and vertical-mounted models are available. Some models are equipped with special features such as vial off position, dial lock feature, and adjustable heater.