Displays voltage, current, power, power factor, energy consumption and frequency at the same time. Made of PC flame-retardant material, which will be more safe for using. Backlight control, short press to turn on/off backlight. Hold press for 3 second to enter the over-load power setting, hold press for 5 second, system reset, cumulative values restores back to zero, overload power setting restore default value Voltage measurement range is AC 50-300V , current measurement range is 0.01-100A, frequency measurement range is 45-65Hz , energy measurement range is 0.01Wh-99999kWh The volt amp power energy frequency panel monitor is designed with built-in CT, no need to buy separately, powered by power grid directly (AC 220V), no need external power supply. The device is unidirectional. An arrow on the CT sensor indicates the direction of current flow. Refer included user's manual for details. https://elecena.pl/product/24049971/p06s-100-100a-digital-electricity-meter-energy-meter-lcd-display-voltmeter-ammeter-frequency-meter 2023-08-21 https://elecena.pl/product/24049971/p06s-100-100a-digital-electricity-meter-energy-meter-lcd-display-voltmeter-ammeter-frequency-meter 2024-12-16 https://elecena.pl/product/24049971/p06s-100-100a-digital-electricity-meter-energy-meter-lcd-display-voltmeter-ammeter-frequency-meter 2025-10-25 https://elecena.pl/product/24049971/p06s-100-100a-digital-electricity-meter-energy-meter-lcd-display-voltmeter-ammeter-frequency-meter 2025-10-29