It is digital voltage tester signal indicator, high brightness LED display and cylindrical main body.The meter can only use to measure AC electricity.It can be used as signal indication, warning signal, accident signal and other signals in the line of electric power, telecommunication, machine tool, ship, textile,printing and mining machinery.Material: plastic + metalcolor: BlueSpecification:Item: Digital Indicator Voltmeter u0026 AmmeterVoltage: AC 50-500VCurrent: 0-100APanel size: 31x31mm1.22x1.22inchMounting aperture:22mmPackage Contents:1 x Voltage u0026 Current Indicator1 x Current TransformerOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store