Voltmeter ampere meter Hz meter digital 3in1 500V 120A layar lebar

The digital AC voltage, current and frequency are displayed on the same meter at the same time. The meter does not need to add power supply and transformer. The meter comes with a 120A precision small transformer. Specification Voltage: AC50-500V Current: AC0-120A Frequency: 10-99.9Hz Dimensions: 72*72*32mm Hole size: 68*68mm (embedded installation) Measurement accuracy: 1%±2 words Package Included 1 × measuring instrument 120A transformer (hole diameter 15mm) can meet the national standard 21-25 square millimeter standard copper wire through This instrument is only suitable for pure AC 50-60HZ mains power supply. It cannot be used for square wave, inverter output, and sine wave circuits with modified sine waves, otherwise the instrument will be permanently damaged!