The Raypak 006445F Auto High Limit Switch is a crucial safety component designed for HVAC systems, particularly in water heaters and boilers. This 3/8" switch monitors and controls the temperature within a range of 40°F to 180°F, ensuring the system doesn't exceed safe operating limits. Operating within a voltage range of 32-180V, it automatically cuts off power if the temperature sur... https://www.usapoolshop.com/006445f-raypak-auto-high-limit-40-180-f