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Resideo Honeywell Home THM5421R1021/U Prestige® 2-Wire IAQ Equipment Interface Module.
Resideo Honeywell Home THM5421R1021/U 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.
- SKU: THM5421R1021/U