Honeywell THM5421R1021|MHTHM5421R1021 - EQUIPMENT INTERFACE MODULE

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 I NPUTS FOR WIRED SENSORS OR DRY CONTACT DEVICES. USED WITH ALL VERSIONS O F PRESTIGE IAQ THERMOSTATS AND THE NEW VISIONPRO 8000 WITH REDLINK THERM OSTATS.