The WHITE RODGERS part 3L11-190 is a reliable and versatile snap action disc thermostat designed to precisely control temperature in various applications. With its 4-pin configuration, this thermostat offers easy installation and compatibility with a wide range of systems. The snap action disc technology ensures accurate and fast response, allowing for efficient temperature regulation. Whether you need to maintain a specific temperature in your HVAC system, water heater, or any other heating or cooling equipment, the 3L11-190 thermostat is a dependable choice.