Put the attaching plug into car cigarette plug sockets
Put the inflator adapter into the Tire value inside
Press "Set" key to change available unit : Psi/Bar/Kpa/Kg/CM2
Press "+" or "-" to set Tire Inject Air Value (default 30Psi when power on)
Switch ON/OFF Keys to restart or stop the process of air inflating
It will be automatic shut-down when Air pressure is +-2 Psi contrast your set pressure valuue. Or you could change the pressure value, Motor restart and inflate. Turn off the switch, then remove inflating adaptor. Follow these steps with other tires