The EMAX Programmable Air Line is engineered and manufactured in the USA, and features second generation patent pending Whisper Series Air Silencers to reduce stationary compressor DBA ratings below normal conversation levels. Users can program the day, date and hours of operation; set PSI and RPM ranges; choose continuous variable speed operation or start/stop; and automatically set the time to drain the water from the air compressor tank. The compressors automatically shut down or provide a maintenance warning message when oil levels are low and oil or filters need to be changed. The Variable Frequency Drive Technology allows one unit to be programmed by the user to operate on the majority of input power options on the market.