Features:AC 80-500V LED dual display of AC voltage and frequency in the same time.The data is more intuitive, LED two-color display, red + green, clear and easy for monitoring at a glance.Do not need power supply, two wires just connect with AC 80-500V directly, then you can finish testing.Easy to install, embedded buckle installation, more stable.Meter only fits with pure AC 45-65HZ power supply, not be used for square wave, inverter output.Specification:Condition:100% Brand NewProduct Model: YB4835VFMaterial: PlasticColor: White, Black(Optional)Weight: Approx.70g/2.5ozDisplay Mode: 0.39in LED, voltage: red word, frequency: green wordMeasurement Accuracy: 1%(2 words )Testing Rate: 2 times/sec Frequency Measuring Range: 45.0 - 65.0Hz Minimum Resolution: 0.1hzVoltage Measuring Range: AC80-500V Minimum Resolution: 1VPackage List:1 x Voltage Frequency MeterNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..