Features 1、AC 80-500V LED dual display of AC voltage and frequency in the same time. 2、The data is more intuitive, LED two-color display, red + green, clear and easy for monitoring at a glance. 3、Do not need power supply, two wires just connect with AC 80-500V directly, then you can finish testing. 4、Easy to install, embedded buckle installation, more stable. 5、Meter only fits with pure AC 45‑65HZ power supply, not be used for square wave, inverter output. Specification 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 New Product Model: YB4835VF Material: Plastic Color: White, Black(Optional) Weight: Approx.70g/2.5oz Display Mode: 0.39in LED, voltage: red word, frequency: green word Measurement Accuracy: 1%(±2 words ) Testing Rate: 2 times/sec Frequency Measuring Range: 45.0 - 65.0Hz Minimum Resolution: 0.1hz Voltage Measuring Range: AC80-500V Minimum Resolution: 1V Package List: 1 x Voltage Frequency Meter Note: 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. Package List