Honeywell TH8321R1001 Vision pro 8000 Thermostat, One Size, White

Works stand alone or with the THM5421R1021 equipment interface module or with truezone wireless adapter Stages up to 3 heat/2 cool heat pump or up to 2 heat/2 cool conventional when use standalone Dual powered - battery or hardwired Stages up to 3 heat/2 cool heat pump or up to 2 heat/2 cool conventional when use standalone Stages up to 3 heat/2, cool heat pump or up to 2 heat/2 cool conventional when use, standalone.