There two pointers in the pressure gauge, one for the real-time pressure, another one is used to set pressure. You just need to set a inflation pressure, and the machine will automatically stop filling when the preset air pressure is reached, you no longer need to watch your paintball tank while it is inflated.
Note: the cooling fan still working while the pressure reached. : Under work voltage(12V DC or 110/220V AC), the engine speed can reach up to 2700r/min, and the air output is 11L/min.Our test results followed: for 0.5L container from 0Psi to 3000Psi, it spent 11 mins; for 1L container from 0Psi to 3000Psi, it spent 26 mins; for 2L container from 0Psi to 3000Psi, it spent 46 mins. Note: the air compressor need 10-15 mins to be cooled down after 25 mins work.
Powered by Car & Powered at Home? : This air compressor can be powered by the 12V DC car battery(it need keep your car machine working) or powered by 110V-220V at home, it has a built-in inverter voltage conversion device, you can easily adjust it from 110V-220V AC with the user's normal. Note: the initial setting is for 110V AC at home. The inflatable interface's diameter is 8mm, which compatibles with most of the air gun/ paintball/scuba tank. : This high pressure air pump only weight for 21 lb, and the size is: 9.65.610 in, it's easy for carry around.