Features: Automatic Air Purge: Eliminates damaging air without monitoring gauges or opening valves.Automatic Oil Drain: A display reminds you to empty the graduated container to show the amount of oil to replace.Automatic Refrigerant Refill: Maintains a user-selectable amount of refrigerant in an internal vessel and signals with it’s time to change supply tank, no monitoring required.Display: MultilingualRefrigerant Charging: Select a charge mode from high or low side.High or LowRefrigerant Management System: Displays refrigerant use and monitors remaining filter life. Prompts appear when 1/3 of filter life remains.Image: