SpecificationsPropertyValueUnitVoltage240VMax. Pressure8BARCurrent16AA pressure switch electrical unit with automatic pressure release when switching off the compressor.This unit has a red switch on top, when pulled in the extended position the circuit completes and switches on the compressor if the pressure is below threshold.The compressor proceeds to fill the tank with compressed air and upon reaching the threshold pressure, for this switch it is calibrated to 8 BAR, this unit willSwitch off the motorRelease back pressure on the compressor headThe unit has an opening for electrical power in, another opening for electrical power out, and then the fixed opening with thread for attaching the pressurized air line.