Oil switch YTK-18H High working prssure up to 400bar. Proof pressure can be 600bar. Piston and diaphragm combination sensor, ideal for compact air, light fuel, lubric. Range: 3~100bar Accuracy: 2.5% Rating: AC 220V/6A Ambient temperature: -20~+40 Degree C. Medium temperature: 0-100 Degree C. Protection: IP54.