PMB05 power meter socket features white outer shell and backlight LCD display, enabling clear reading in dark environments. This plug-in energy monitor detects real-time voltage, current, power, cumulative electricity, power factor and frequency. Built-in overload protection effectively avoids circuit risks brought by overloaded electrical appliances. Plug-and-play design needs no complicated installation, easy to connect with household chargers, lighting and small home appliances. It helps users track power consumption and formulate energy-saving plans. Made of flame-retardant plastic shell with stable internal circuit for long service life. Compact and lightweight for indoor daily use. Factory direct bulk wholesale available. It is a cost-effective power testing tool for families, offices and energy consumption inspection.