PMB05 power meter socket adopts distinctive blue shell and built-in backlight LCD screen, convenient for reading data under dim light. This multifunctional plug-in energy monitor can test voltage, current, power, energy consumption, frequency and power factor in real time. Users can track household electricity consumption to save energy effectively. Equipped with overload protection to prevent circuit damage. Plug-and-play design requires no complicated installation, suitable for household appliances, chargers and small electrical equipment. Compact structure saves space and easy to carry. Stable circuit design ensures long-term reliable operation. Factory direct wholesale is available. It is a practical power testing tool for families, office use and energy consumption inspection.