- THM5421 Equipment Interface Module for Prestige IAQ and VisionPRO 8000 with RedLINK
- 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 Device