Description
Honeywell – THM5421R1021 IAQ Equipment Interface Module
The Honeywell THM5421R1021 is an Equipment Interface Module that 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.
Features:
- 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
- Four sensor inputs for wired sensors or dry contact devices
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