Specifications:The scales printed on the dial are clearly visible, and the red pointer is brightly colored, allowing you to see at a glance.The wiring is simple and convenient, and it is embedded installation, which is durable and practical.It can withstand a voltage withstand test of a sine wave with a frequency of 50Hz and an AC voltage of 2kv for 1min.Mainly used to directly measure the current in the electrical circuit.It can be used on some power equipment and electrical equipment in the power transmission and distribution system.Item Name: AC Pointer VoltmeterMaterial: PlasticStyle: 250 Type: (AC0-250V), 300 Type: (AC0-300V), 500 Type: (AC0-500V)Product Use: Measuring Line CurrentInstallation Method: Suitable for Vertical Installation(Except for Special Regulations)Storage Temperature: -40 Degree Celsius to 70 Degree CelsiusAccuracy Grade: ±2.5 PercentInsulation Resistance: More than 20MΩ/DC500VDamping Time: Less than 4SWorking Environment Temperature: -20 Degree Celsius to 40 Degree CelsiusRelative Humidity: Less than and Equal to 85 PercentFeatures: Clear Scale, Easy to Install, Simple StructureSize: 6.3cm x 6cm x 5.5cm/2.48" x 2.36" x 2.17" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x AC Pointer Voltmeter