The Aprilaire Automatic Humidifier Control Model 60 is a brand new product without an Outdoor Temperature Display (ODT) sensor. This humidistat features adjustable humidity control and operates using an evaporative method with an electrical power source. It is made of durable white plastic and is designed to maintain optimal indoor air quality by automatically adjusting to your desired humidity level. Perfect for improving heating and cooling efficiency in your home, this model offers reliable performance and easy maintenance.