Item Type: Pressure Switch Model: LF56 Maximum Ambient Temperature: 66°C Maximum Load: 15A 250VAC Maximum Diaphragm Pressure: 350psi Pressure Range: 20-300psi / 0.14-2.0MPa Pressure Difference Range: 20-50psi / 150-350kPa Interface Thread: NPT1/4-18 Contact Type: SPDT Contact Method: Single Pole Double Throw Diaphragm: Stainless Steel Interface: Brass Working Medium: Non-corrosive media such as air, water, oil, liquid, etc.; chlorine-containing liquids are not supported Ambient Temperature: -29°C to 66°C for normal operation Medium Temperature: -40°C to 180°C without freezing MULTIPLE USAGES: The pressure switch is suitable for pressure control, pressure limiting, and alarm applications for non-corrosive liquids, gases, and steam. PRESSURE DETECTION: Detects pressure changes to alter the internal switch state, controlling the ON and OFF action of the external circuit. SPDT CONTACT TYPE: Single pole double throw contact method, suitable for boiler control and water tower pressure regulation systems. WITH PLASTIC COVER: The pressure controller housing includes a plastic cover, allowing real-time observation of the pressure control point. EXCELLENT MATERIAL: The pressure diaphragm is constructed from stainless steel, the pressure fitting is made of brass, and the thread type is NPT1/4-18. Package Includes: 1 x Pressure Switch 1 x User Manual