The kit includes a pre-calibrated pressure switch

providing tight shut-off via high-grade NBR elastomeric seals

Can the electrode be trimmed for specific level requirements

replacing the sensor often resolves the communication break between the loop and the control module

Aprilaire 5529 Transformer 322056-301 The kit includes a pre-calibratedThe Aprilaire 5529 Transformer is a genuine OEM replacement component designed specifically for the Aprilaire Model 800 Steam Humidifier and Aprilaire 865 systems. This 40VA transformer is the essential power source for units featuring a fill valve inlet that extends from the bottom of the housing. By converting line voltage to a consistent 24V AC, it ensures that your whole home humidifier maintains peak electrical performance and system protection.