Features: Measuring range: AC 30V-500V. It can be used in measuring AC110V, 220V, 380V This voltmeter only need to connect two wires, the connection is simple Used 0.56 inch LED digital tube, the displaying is sharp and vibrant NOTE: This voltmeter use capacitance to reach voltage step-down, it can't be used in inverter, Electronic speed governing, silicon controlled voltage adjusting dimming, UPS and other occasion with radio-frequency component and non-sinusoidal wave, or it will be bunt and doesn't work normally Specifiations: Measure voltage: AC 30V-500V Measurement accuracy: 1%+1 Digit Display Color: Red/Blue/Green Display: 3 Digits 0.56" LED Display Refresh rate: about 200ms /times Operation temperature: -10-65 (14F-140F) Size: 48x29x20mm/1.89x1.14x0.79" Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! No Retail Package Package Includes: 1 x Digital AC Voltmeter