1AC 80-500V LED dual display of AC voltage and frequency in the same time. 2The data is more intuitive, LED two-color display, red green, clear and easy for monitoring at a glance. 3Do not need power supply, two wires just connect with AC 80-500V directly, then you can finish testing. 4Easy to install, embedded buckle installation, more stable. 5Meter only fits with pure AC 45?65HZ power supply, not be used for square wave, inverter output.Features: _x000D_AC 80-500V LED dual display of AC voltage and frequency in the same time. _x000D_The data is more intuitive, LED two-color display, red green, clear and easy for monitoring at a glance. _x000D_Do not need power supply, two wires just connect with AC 80-500V directly, then you can finish testing. _x000D_Easy to install, embedded buckle installation, more stable. _x000D_Meter only fits with pure AC 45-65HZ power supply, not be used for square wave, inverter output. _x000D__x000D__x000D_Specification: _x000D_Condition:100% Brand New _x000D_Product Model: YB4835VF _x000D_Material: Plastic _x000D_Color: White, Black(Optional) _x000D_Weight: Approx.70g/2.5oz _x000D_Display Mode: 0.39in LED, voltage: red word, frequency: green word _x000D_Measurement Accuracy: 1%(2 words ) _x000D_Testing Rate: 2 times/sec _x000D_Frequency Measuring Range: 45.0 - 65.0Hz Minimum Resolution: 0.1hz _x000D_Voltage Measuring Range: AC80-500V Minimum Resolution: 1V _x000D__x000D__x000D_Package List: _x000D_1 x Voltage Frequency Meter _x000D__x000D__x000D_Note:_x000D_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.