Low-voltage Single Pole/Single Throw (SPST) manual humidistat. Integrate control of humidification, dehumidification, ventilation and bathroom fans into single device with Honeywell's TrueIAQ®. Program air quality and fan settings individually, or as system for increased comfort and energy savings. TrueIAQ® automatically adjusts settings for changes in outside temperature and humidity, and provides maintenance reminders. Setting changes made easily with touch of button. Simultaneously displays both indoor and outdoor temperature and humidity levels on-screen. Automatically adjusts inside settings based on outdoor conditions. Include individual air quality enhancements or integrate them as part of total air quality system. Intuitive digital backlit display. Temperature range: 1.1-40C. Duct or remote mount.