VisionPro Honeywell Prestige IAQ and VisionPRO RedLINK Equipment Interface Module (Includes EIM and 2 Duct Sensors) YTHM5421R1010
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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.