To illustrate the STAR feature, do the following:
Select the 200mV, 10Ω range. This is a valid range shown by the LEDs being illuminated on the 200mV and 10Ω buttons.
Press the 5V button. Notice that the 5V LED is on and the resistance range changes to 50Ω automatically. The 5V at 10Ω range is disabled.
Now press the 15V button. Notice that the 1kΩ resistance is automatically selected. The 15V at 50Ω range is disabled and the next valid resistance range was activated at the selected voltage.