Honeywell THM5421R1021 IAQ Equipment Interface Module Controls Up To 4-Stages Of Heat And 2-Stages Of Cool In A Heat Pump System

Product Description

The Honeywell Home THM5421R1021 IAQ Equipment Interface Module is a key component for monitoring and controlling indoor air quality systems. This interface module can support various thermostat models including the Prestige IAQ Thermostats. It provides enhanced functionality to manage up to four stages of heat and two stages of cool in heat pump systems. This unit is designed for reliable performance in HVAC applications.

• Supports four sensor inputs for wired sensors or dry contact devices
• Includes three sets of IAQ contacts for managing humidification, dehumidification, and ventilation
• Compatible with all versions of Prestige IAQ Thermostats and new RedLINK VisionPRO Thermostats

Product Highlights

The Honeywell THM5421R1021 is built for HVAC professionals seeking robust control solutions for complex indoor environments.

Product Information

Standard Information

• Brand: Honeywell
• MPN: THM5421R1021

Technical Specifications

• Product Dimensions: 10 x 5.9 x 2.3 inches
• Item Weight: 0.85 Pounds
• Voltage Rating: 18 - 30 VAC
• Control Stages for Heat: 4
• Control Stages for Cool: 2
• Included Components: Interface Module