ITEM NAME:6in1 AC 60-500V/100A Backlight LCD Digital Panel Meter AC Voltage Current Meter Product Description Description: 6 in 1 AC 60-500V/100A Blue Backlight LCD Digital Multifunctional Panel Meter Features: Test: AC Voltage, current, active power, frequency, power factor, energy. Energy clearing method: press key or automatically. Display type: LCD with blue backlight;"7-display mode" are selectable. Blue backlight is adjustable: high light/low light/no-light. Built-in key, the voltage and current can be calibrated; other options can be set and switched. Update speed of the display value: Fast/Standard/Slow Display accuracy: Three digits / Four digits Power down memory function. The decimal point is automatically shifted With a back cover, safe, dustproof, protect the circuit board. Wiring is simple: No need to connect the power supply; No need to buy a transformer or shunt for the current testing, the instrument comes with it. Built-in shunt. Don't need to buy separately. Press key operation: MODE key: Press it, switch the display mode: Only display Frequency(Hz)--Only display Power Factor(PF)--Only display Energy(kWh)--Cycle display (PF) or (Hz)--Cycle display (PF) or (kWh)--Cycle display (Hz)Â or (kWh)--Cycle display (Hz), (PF) or (kWh) Long press it, enter the setting mode or confirm. SET key: Each time press it , switch a backlight brightness: high light, low light, no light Setting mode: each time press, Number increases or switch corresponding option Long press it, cancel the setup or exit. Working.Display type: LCD with blue backlight;"7-display mode" are selectable. Blue backlight is adjustable: high light/low light/no-light. With a back cover, safe, dustproof, protect the circuit board. Working humidity: 10~80% (no condensation).