FAQs Filter by Free word/Model name Search View All Filter by Product MULTIMETER CLAMP METER INSULATION TESTER EARTH TESTER POWER METER LOGGER CLAMP METER All AC CLAMP METER AC/DC CLAMP METER LEAKAGE CLAMP METER FORK CURRENT TESTER DC MILLIAMP CLAMP METER DC MILLIAMP CLAMP LOGGER The pointer does not deflect. (=Unable to measure.) When the power is turned on, nothing is displayed in the LCD. The pointer moves abnormally. The readings remain displayed in the LCD. When the range is set to DC voltage, the readings vary although measuring nothing. The transformer jaws beat when measuring large current. The readings fluctuate when measuring current. Unable to measure the resistance. When the power is tuned on, nothing is displayed in the LCD. If you cannot find the answer on the FAQ pages, please contact us from here.