1. Pressure switched can be used not only in fluoride refrigeration, but also in the air and liquid. 2. Allowed medium temperature: -45℃ to 120℃ . 3. Renovated micro-switch structure ensures the reliable switch function. 4. Flexible mounting plate suits various kinds of application. 5. Single Pressure Controls divide two types: High pressure and Low pressure, they are mounted on low-pressure or high-pressure end of the compressor to control the exhaust and inspiration pressure of compressor.