Rotary Vane Vacuum Pump, 195 liters/minute displacement at 60 Hz. 1.3 x 10-4 mBar partial pressure. Direct-drive, two-stage, oil-sealed, sliding-vane. Includes on/off switch, inlet and outlet ports, mode selector (High Vacuum and High Throughput), gas-ballast control (Closed, Low Flow and High Flow) and thermal overload device with automatic reset. Single phase electric motor, totally enclosed and fan cooled. Includes (4) one liter bottles of vacuum pump oil, two inlet adapters (one 1/2" OD and one 3/4" OD), pump exhaust filter with oil filter and odor filter elements. For operation on 230 volts, 50/60 Hz, 4.0 amps. Dimensions: 6.5" x 17" x 10.4" (15.8 x 43.0 x 26.1 cm).