Honeywell Vision PRO IAQ Thermostat provides electronic control of 24 Vac heating and cooling systems in addition to humidification, dehumidification and ventilation all with just 3 wires to the thermostat.. Honeywell TH9421C1004 offers you top-of-the-line features like Touchscreen interaction, a real-time clock, and a large, easy-to-read backlit display.
- Advanced dual-fuel control
- Three wires to the living space allows for easy equipment upgrade without having to run additional thermostat wire
- Thermostat connects with Equipment Interface Module or EnviraZONE panel to control temperature, humidification, dehumidification and ventilation from a single point in the home
- Automatically raises humidity levels throughout all rooms in the home, moisturizing air to prevent symptoms of dryness and to protect hardwood flooring and woodwork
- Removes air pollutants by exchanging the stale air in a house with fresh, filtered air better than having an open window