The Honeywell Digital Non-programmable Thermostat TH3110D1008 is designed for heat pumps. It has a white plastic rectangular shape with a 1.5-inch digital display. This thermostat is compatible with Honeywell products and works on low voltage. It features temperature sensor technology, heat-cool-off system switching, a single cooling stage, and operates with a switch, push button, or digitally. It can be wall-mounted or surface-mounted and is suitable for central heating and cooling systems.