Basic non-programmable digital thermostat, 1 heat/1 cool, Premier White®. Dimensions: 4-11/16 inch high X 2 7/8 inch wide X 1 1/8 inch deep; 120mm high x 74mm wide x 28mm deep. Adjustable temperature scale: Standard selection of 40F to 99F. Mounting: vertical. 20- to 30-volt (AC) or 750millivolt (mV). Switch positions: heat/off.