Your browser is not supported. For the best experience, you should upgrade to a modern browser with improved speed and security.
  • While Supplies Last

Honeywell THM5421R1021/U - Prestige® 2-Wire IAQ Equipment Interface Module

Item: THM5421R1021/U
MFR: THM5421R1021/U
What’s the price?
Sign in or register for pricing.
Decrease quantity
Increase quantity

Your Order Templates
Save products for later, or create lists to quickly re-buy items for routine jobs.

Add to Order Template

Inventory At Nearby Branches



Equipment Interface Module controls up to 4-stages of heat and 2-stages of cool in a heat pump system and up to 3-stages of heat and 2-stages of cool in a conventional system. Three sets of Universal IAQ contacts to control humidification, dehumidification, and ventilation. Four sensor inputs for wired sensors or dry contact devices.


NameHoneywell THM5421R1021/U - Prestige® 2-Wire IAQ Equipment Interface Module
Gemaire Item NumberTHM5421R1021/U
Manufacturer Product NumberTHM5421R1021/U
SKU - PIM Number1374780270684
ERP Number331911
Unit of MeasureEA
Weight1.0 Pounds (Lb)
Length1.6 Inches (In)
Width4.8 Inches (In)
Height9.3 Inches (In)
Hazardous MaterialNo
EPA Cert RequiredNo
Country of OriginMEX
Voltage18-30 VAC
For Use WithAll THX9421R5021 Prestige 2-Wire IAQ Thermostats and all versions of Prestige IAQ Thermostats and the VisionPRO Thermostats with RedLINK™ technology.
GEM - Case Quantity
Tell Us How We Can Improve Your Shopping Experience - click here!