Honeywell THM5421R1021 IAQ Equipment Interface Module

Feature

Four sensor inputs for wired sensors or dry contact devices
Three sets of IAQ contacts to control humidification, dehumidification, and ventilation
Used with all versions of Prestige IAQ Thermostats and the New RedLINK VisionPRO Thermostats
Three sets of IAQ contacts to control humidification, dehumidification and ventilation
Used with all versions of Prestige IAQ Thermostats and the New Relink VisionPRO Thermostats

Description

This Honeywell IAQ Equipment Interface Module is used to control 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.