The Honeywell Home Round Heat/Cool Thermostat offers time-tested, precise temperature control in a simple, mercury-free thermostat. It has non-programmable mechanical operation in a traditional circular housing.. Honeywell Home classic round styling. Precise temperature control with +/- degree accuracy. Familiar design makes temperature easy to set. Color Family: White. Control Type: Manual. Features: No Additional Features. Heating & Cooling System Type: Single Stage. Included: Mounting Hardware. Operation Type: Mechanical. Pack Size: 1. Power Options: Hardwired. Thermostat Compatibility: Universal. Thermostat Shape: Round. Thermostat Type: Heating and Cooling. Voltage (V): 24 V. Voltage Type: Low Voltage. Wire Configuration: 4-Wire. Certifications and Listings: No Certifications or Listings. Product Depth (in.): 1 in. Product Height (in.): 3 in. Product Width (in.): 3 in