bimetallic strip - a strip consisting of two metals that bends with a rise in temperature

cooling system, engine cooling system - equipment in a motor vehicle that cools the engine

cryostat - a thermostat that operates at very low temperatures

brooder, incubator - apparatus consisting of a box designed to maintain a constant temperature by the use of a thermostat; used for chicks or premature infants

pyrostat - a thermostat that operates at very high temperatures

regulator - any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.