Honeywell THM5421C1008 Equipment Interface Module

Honeywell THM5421C1008 Equipment Interface Module. The VisionPRO IAQ touchscreen universal programmable 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. 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. Note: This item is obsolete and has been replaced by the following: THM5421R1021 with TH8321R1001. See the related products below for a direct link to these items.