This manual humidistat control by Aprilaire is a great addition to your indoor air quality and home improvement needs. Keep your home comfortable and healthy with this easy-to-use device that allows you to control the humidity levels in your space. With its brand reputation and top features such as accurate humidistat settings, this device is perfect for those who want to improve their indoor air quality. This product is compatible with most indoor air quality and fan systems, which makes it a versatile choice for homeowners.