Operation:
Step 1: Red clip connect with positive(+) polarity, and black clip connect with negative(-) polarity. The nixie light will show “00.0” when nothing connecting with the testing probe.
Step 2: When the tester probe connects with positive voltage, the nixie light will display the voltage. If the voltage is less than 0.3VDC, buzzer will be on, and green LED will light up. If the voltage is greater than 60VDC, the nixie light will display “Err”.
Step 3: When the tester probe connects with negative pole, green LED will light up, and buzzer will be on.