Features: This wind pressure switches ensures safe operations of your gas water heater by continuously monitoring air pressure levels, preventing potential hazards from inadequate or excessive ventilation. Featuring double pressure settings (75/55Pa and 65/40Pa) and constructed from high temperature resistant, corrosions proof materials, this gas water heater accessory delivers precise pressure response with enhanced longevity. Designed for homeowners and commercial property managers requiring stable boiler components, it serves as an essential safety upgrade for residential heating systems and business establishments. Install this switches in wall mounted furnaces to maintain optimal combustion conditions during daily hot water production, particularly in environments with fluctuating ventilation demands. Universally suitable for major brands gas appliances, this wind pressure switches functions as a critical wall hung furnaces component for sustained performances. Specifications: Component: Plastic Color: White Size: As Pictures Show Package Includes: 1x Air Pressure switches note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.