AC50-500V Voltage Current Frequency Meter Digital LED Voltmeter Ammeter AC120A Features: Compact size and exquisite appearance. Voltage current frequency three display. Wide voltage AC50-500V. High-definition LCD display, clear display. Stable operation, stable performance, strong anti-interference, high accuracy, wide range of applications.   Product Parameter: Product name：Digital current and voltage meter head Product Model:CH-72 VAHz Opening size: 68*68MM (embedded installation) Auxiliary power supply: two-wire passive Measuring range：Voltage AC50-500V, Current AC0-120A Application: 10-99.9hz This meter is only suitable for pure AC 50-63HZ mains power supply, it can not be used for square wave, inverter output and repair sine wave sine wave circuit measurement, otherwise the meter will be permanently damaged!