The MIDWEST CONTROL Pressure Switch with Unloader & On-Off Lever (Model 69JF9LY) operates within a pressure range of 140-175 psi, providing precise control for pneumatic systems. This switch features an integrated unloader that helps to reduce pressure during startup, enhancing system efficiency. The on-off lever allows for manual control, making it user-friendly. Constructed with high-quality materials, it ensures durability and compliance with industry standards. Ideal for compressors and HVAC systems, this switch is a reliable choice for maintaining optimal pressure levels.