This solenoid controller delivers a consistent water flowing of 1 liter per min, maintaining stable humidity levels Tested for 500, 000 on / off cycles, it long term reliability and reduces maintenance costs Resistant to water pressure, scale buildup, and environmental factors electromagnetic coil enables fast 24V response and on / off operate Provides controlled flowing rate of 3.5 GPH, ensuring ideal humidity levels Perfect for most household humidifiers ( 1040, 1042, 1137 series) in homes or offices, maintaining comfortable humidity during dry Enhances air and protects equipment in commercial spaces The 990 53 / 24V humidifier solenoid controller features advanced electromagnetic technology for accurate water flowing control, ensuring quick and effective humidity in various environments Fot most humidifier models ( 1042, 1042L, 1042LH, 1137) for easy replacement Made from and rustproof metal, this controller replecemanet ensures durability and in high environments Features standard connectors for easy installation, simplifying repairs and replacements