The DA300R is a 1/8 H.P. Piston Compressor With Auto shutoff and regulator included. Compressor shuts off when Airbrush is not in use. Operating Pressure 20 to 45 PSI depending on Airbrush being used.This is one of my personal traveling compressors. It is small and light enough to travel with yet still packs a punch! Two year company warranty included. This Compressor is made by Paasche Airbrushes and is the perfect compliment to Rj's Shadow Airbrush!