The Robinair 34788NI230 Refrigerant Recover, Recycle, Recharge Machine for R-134a A/C Systems, 230 VAC recovers, recycles, evacuates, leak-tests and recharges R-134a with improved 98.5% efficiency - unmatched by any competitor. The new design features a larger graphical display, automatic features including leak testing, automatic refrigerant refill and oil drain/inject, putting A/C lubricant back into the system. The 34788NI also boasts the ability to add a printer, USB data sharing, refrigerant identifier and wireless module for Wi-Fi or Bluetooth® communication. An optional refrigerant charge and oil capacities database is available for North American market vehicles.