Trucktok 4655 24 VAC Control Switch Replacement for Manual Humidistat Humidifier Manual Water Saver Furnace Humidifier (White)

["[Fitment]:400 500 600 700 Evaporative Humidifiers,800 Steam Humidifier.","[Attention]: The product cannot sense indoor humidity and needs to be manually set to match the outdoor temperature to prevent water from flowing down from both sides of the window.","[Usage]: When the relative humidity reverses, the product will turn off the control switch. The knob value you are rotating is manually set for relative humidity, which is the maximum relative humidity value to prevent internal condensation. Therefore, please choose the maximum relative temperature value for external temperature or a lower relative humidity value.","[Function]: To achieve optimal operation or performance of the humidifier, with sensitive control switches.","[Installation]: Remove the old humidifier and ensure it is a 2-wire system. After removing the old product, simply connect it together. Install pipes near HVAC products or install them on walls in living spaces, at least 6 inches upstream of humidifiers."]