Features: This automatic air compressor switches features auto load/unload functionality, activating at 90PSI and shutting off at 120PSI for precise pressure control in automotive HVAC systems. Engineered with V seal pistons technology and overflows port design, it delivers 30% high airflows efficiency than conventional diaphragm compressors while ensuring leak proof durability. Ideal for mechanics and automotive workshops requiring compressor accessories for vehicle maintenance and pneumatics tool operations. Perfect for garage installations, industrial air compression systems, and applications demanding rapid pressure response and stable performances. Its small size, light weight PVC construction simplifies integration with existing compressor setups while maintaining functionality under continuous operations. Specifications: Component:Metal Voltages: 220V-380V Measuring ranges: 0.5-0.8MPA Maximums rating: 20A Pressure switches Control ranges: 90- 120psi Safety valves Regulation Pressure ranges: 30- 120psi Input and Input Port: 1/4" Note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item. Package includes: 1Piece Air Compressor Pressure switches