Product Description Honeywell’s focuspro 5000 digital thermostat offers the perfect blend of features, performance, energy savings and value. With the largest backlit screen in its class, the focuspro 5000 prominently displays both room and set temperature. Application: up to 1 heat/1 cool conventional systems and heat pumps with no auxiliary heat dimensions: 3-7/16 inch h x 4-1/2 inch W x 1-5/16 inch D horizontal mounting. From the Manufacturer The FocusPRO non-programmable digital thermostat provides electronic control of 24 Vac conventional and heat pump systems or 750 mV heating systems.