DetailsVision Pro IAQ Interface Module, Controls Up To 4 Heat/2 Cool Stages When Connected with Thermostat. Visionpro Indoor Air Quality (Iaq) Total Home Comfort System Features Effortless, Seven-Day Programmable Touchscreen Thermostat That Provides Control Of Temperature, Humidification, Dehumidification, and Ventilation. Large, Clear Display with Backlight Shows The Current and Set Temperature and Time, Even In The Dark. Touchscreen Interaction. Real-Time Clock Keeps Time During Power Failures and Automatically Updates To Daylight Savings. Change/Check Reminders Let Homeowner Know When To Schedule Service or Replace Filters. Various Hold Options Allows Override Of The Program Schedule, As Desired. Controls Humidification To Increase Comfort and Protect Woodwork and Furnishings. Controls Dehumidification Using Air Conditioner with High/Low Speed Fan or A Whole-House Dehumidifier. Controls Ventilation with Other Hrv, Erv, or Fresh Air Damper. Vent On Demand and Automatically, Using Patented Advanced Ventilation Control. Advanced Heat Pump Control Features Balance Point Plus Temperature Droop Control To Increase Comfort Levels.
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Weight 0.65 Pounds (Lb) Width 4.5 Inches (In) Height 7.25 Inches (In) Country of Origin MEX Length 1.375 Inches (In) Brand Honeywell Voltage 20-30 VAC Electrical Rating THM5421 is rated 20 to 30 VAC Power Method Hardwired Includes Equipment Interface Module Only Application Heat/Cool or Heat Pump with Auxiliary Heat Color White For Use With TH9421 VisionPRO IAQ Thermostat Mounting Vertical Terminal Designations 1, 2, 3, C, R, Rc, Rh, R, W1-O/B, W2-Aux, W3-Aux2, Y, Y2, G, L, Out1, Out2, In1, In2, Dats1, Dats2, Hum1, Hum2, Dhm1, Dhm2, Vnt1, Vnt2 Type Not Provided Before Item Discontinued Warranty Offered Yes Stages Heat 3 Cycle/Hertz 50 Cycle/Hertz 60 Comments/Notes Includes Humidification Control with or without Frost Protection, Dehumidification using Whole House Dehumidifier or Air Conditioning with High or Low speed fan, Advanced Patented Ventilation Control and Advanced Dual Fuel Heat Pump Control. Stages Cool 2