The AllPoints Foodservice Parts & Supplies 42-1806 is a reliable low-pressure switch designed for efficient fan cycling. It operates with an open pressure of 170 psi and a close pressure of 250 psi, with a tolerance of +/- 15 psi. This switch ensures optimal performance and safety in your foodservice equipment, making it an essential component for maintaining proper pressure levels. Its robust construction guarantees durability and longevity in demanding environments.