Maximize healthy humidity in the 40-60% RH range which has been shown to reduce the incidence of respiratory infections and symptoms related to allergies and asthma by minimizing the formation of bacteria and viruses, fungi, and dust mitesConvenient and simple to adjust your home's Relative Humidity (RH) with a turn of the dialDesigned for low voltage service (24VAC) to control humidification equipmentChoose Duct Mounting near your HVAC equipment, or Wall Mounting in your living space for even more ease and convenience when you need to adjust the RH level in your homeIf for whatever reason, you decide you are not satisfied, you can request a replacement or a full refund, no questions! Please feel free to contact with us if you are not sure this kit fits your model ,please feel free to email us or comment in Q&A. Maximize healthy humidity in the 40-60% RH range which has been shown to reduce the incidence of respiratory infections and symptoms related to allergies and asthma by minimizing the formation of bacteria and viruses, fungi, and dust mites Convenient and simple to adjust your home's Relative Humidity (RH) with a turn of the dial Designed for low voltage service (24VAC) to control humidification equipment Choose Duct Mounting near your HVAC equipment, or Wall Mounting in your living space for even more ease and convenience when you need to adjust the RH level in your home