The DT190 can display the pressure reading in one of four pressure units. You can select to display the pressure in PSI, BAR, KG/CM2 or kPa.

Press the button to turn the gauge on. Wait for the gauge to show 0.0.

Press the button for more than 3 seconds to enter unit setting mode. The flashing unit icon means gauge is ready for unit changing.

Press the button repeatedly to cycle the display unit. The choices are PSI, BAR, KG/CM2, kPa. When the desired unit is displayed wait for 3 seconds to store the selected unit. The gauge will reset and the working unit icon will be shown on the display.