General compatibility for engine cooling: This electric cooling fan temperature sensor switch provides a universal solution for many automotive applications, compatible with most engine radiators, manifolds, or water outlets to ensure precise temperature control. Durable metal construction: Built from sturdy metal, this sensor switch withstands harsh engine compartment conditions and provides reliable temperature measurement and consistent performance over time. Broad liquid compatibility: Designed to measure temperatures of water, motor oil, and coolant. Suitable for automotive, marine, and industrial applications, with a 1/8 inch NPT port for easy installation. Accurate thermal regulation: Activates at 210°F and deactivates at 145°F to optimize cooling performance, help prevent engine overheating, and maintain efficient radiator fan operation. Use scenarios: In passenger cars or light trucks to control electric cooling fans based on coolant or oil temperature. In marine engines to regulate cooling system temperature and protect against overheating on boats. In industrial equipment or generators to monitor coolant or lubricant temperatures and ensure reliable cooling.