Features:<br> Voltmeter ammeter voltage range is AC50-500V, current range is AC1-140A.<br> Display voltage and current simultaneously in different color, red for voltage, green for current.<br> The monitor is powered by the circuit being measured, no need to connect extra-power source.<br> This meter is only applicable to mains, three-phase, generators, voltage regulator and other sinewaves alternating current, not applicable to non-sinusoidal, high-frequency and voltage regulator and other occasion.<br> If you have questions,contact us.<br> <br> Specifications:<br> Material:ABS<br> Voltage-Measuring Range: AC50-500V<br> Current Measuring Range: AC1-140A<br> Cable Length:Approx.18cm/7.08'<br> Size:Approx.45x26x14.5mm/1.77'x1.02'x0.57'<br> <br> Note:<br> Please allow 1mm errors due to manual measurement.<br> Due to the difference between different monitors, the picture may not reflect the actual color of the item.<br> <br> Package includes:<br> 1x Digital Voltmeter Ammeter