HONEYWELL THM5421C1008 VisionPRO IAQ 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.

Features:

• Upgrade to Multi-Stage Equipment.
• Add Air quality Enhancements Without Wall Clutter.
• Eliminate the Need for a Fossil Fuel Kit.
• Display Outdoor Temperature.
• Thermostat connects with Equipment Interface Module or EnviraZone panel to control temperature, humidification, dehumidification and ventilation from a single point in the home.

Product Specifications:

• Description: VisionPRO IAQ Equipment Interface Module. Total Home Comfort System with Temperature, Humidification, Dehumidification and Ventilation Control
• Application: Heat/Cool or Heat Pump with Auxiliary Heat
• Color: Premier White
• Power Method: Hardwired
• 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
• Dimensions (in.): 7 1/4 in. high x 4 1/2 in wide x 1 3/8 in deep
• Dimensions (mm): 185 mm high x 116 mm wide x 34 mm deep
• Mounting: Vertical
• Electrical Ratings: 20 to 30 Vac
• Frequency: 50 Hz
• Frequency: 60 Hz
• Stages: Up to 2 Heat/2 Cool Conventional
• Stages: Up to 4 Heat/2 Cool Heat Pump
• Outdoor Sensor : Yes, optional
• Discharge Sensor: Yes, optional
• Remote Sensor: Yes, optional
• Heat Current: 1.0 A running
• Cool Current: 1.0 A running
• Fan Current: 0.6A running
• Operating Humidity Range (% RH): 5 to 90% RH, non-condensing
• Comments : 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.
• Used With: TH9421 VisionPRO IAQ Thermostat
• Voltage: 20 to 30 Vac