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, dehumidifica
EQUIPMENT INTERFACE MODULE; PRESTIGE 2-WIRE IAQ THX9421R5021 THERMOSTAT, VISIONPRO THERMOSTAT; OVERALL DIMENSION 4-13/16 INCH WIDTH X 1-5/8 INCH DEPTH X 9-5/16 INCH HEIGHT; COLOR GRAY; VOLTAGE RATING 18 TO 30 VOLT AC 50/60 HERTZ