Features: The 990 53/24V humidifier solenoid controller features advanced electromagnetic technology for accurate water flowing control, ensuring quick and effective humidity adjustment in various environments. Fot most humidifier models (1042, 1042L, 1042LH, 1137) for easy replacement. 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 offer long term reliability and reduces maintenance costs. Resistant to water pressure, scale buildup, and environmental factors. Made from heat resistant and rustproof metal, this controller replecemanet ensures durability and safety in high moisture environments. Features standard connectors for easy installation, simplifying repairs and replacements. Optimized 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 quality and protects equipment in commercial spaces. Specifications: Component: Metal Rate: 3.5 gal/hour Color: As picture shown Weight: Approx. 250g Package Includes: 1Piece Humidifier Solenoid controller note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color