new and high quality Small, exquisite workmanship, long service life. Clear display, easy to use. High accuracy, and stable working persuitable formance LED Display meter has wide measurement range of 60-500V, and 0-100A This product cannot be used in non sinusoidal AC circuits such as silicon controlled voltage regulators, inverters, and frequency conversion equipment, which may cause damage. Product Name: Digital Display AC Voltmeter Product model: AD16-22FVAH Opening size: 22mm Current range:0-100A Voltage range: AC60-500V Frequency: 0-99Hz Ambient temperature: -25-65 Relative humidity:Less than 98% Product lighting: LED display Error range: within 5V, error is normal Colour:Blue Material:PC Package Contents: 1 * LED Digital Voltmeter Ammeter Hertz Meter Only the above package content, other products are not included. Note: Light reflection 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.