Digital humidistat control. Integrate control of humidification, dehumidification, ventilation and bathroom fans with Honeywell's TrueIAQ®. Automatically adjusts humidity settings and provides maintenance reminders for peak efficiency. Temperature range: 1.1C- 40C. Includes outdoor sensor for temperature and humidity. Duct or remote mounting (up to 20 feet/6 meters). Electrical ratings: 120-volt/AC; full load: 2.0A at 24-volt/AC; humidifier; dehumidifier; vent contacts. Operating humidity range (% relative humidity): 95% RH at 95F, non-condensing.