Product parameters: Capacity: 40L Voltage: 110V/60HZ Type: Air pump Power: 0.75KW Air volume: 165 (L/min) Pressure: 115 PSI Net weight: 27kg Gross weight: 31kg Product size 41*41*65cm Packing size: 45*45*70cm Power supply type: American triangle plug Decibel (dB): 58 Main application scope: medical equipment, dentistry, etc. Package includes: 1*Air compressor+1*Manual + 3*foot pads + 1*Muffler Note: Instructions on switching the machine: first turn off the air compressor switch, and then unplug the power supply, otherwise the airflow will easily burn the motor and shorten the service life of the machine.