Adjustable voltage protection value—three-phase overvoltage and undervoltage protector with automatic reset, overvoltage protection, and undervoltage protection. This intelligent home electrical safety protector allows you to monitor and control current and voltage to enhance household electrical safety and help protect your family from potential hazards. Over-voltage, under-voltage, and over-current conditions are automatically managed—when voltage levels are too high or too low, the device disconnects the load, continuously monitors input voltage, and automatically reconnects power once voltage returns to normal. Equipped with an intelligent control chip, the device enables customizable settings based on power usage, displays real-time power consumption, and automatically shuts off in case of overcurrent or overvoltage. Designed for heat and cold resistance, it operates reliably in various environmental conditions. Features multiple indicators and a high-precision LCD display for clear monitoring of current and voltage levels. The LCD screen is energy-efficient and does not consume significant power. Product Name: Three-Phase Overvoltage and Undervoltage Protector Specification: 100A Color: White Material: Plastic Package Contents: 1 x 3-Phase Over and Under Voltage Protector Note: Light reflection and differences in display screens may cause slight variations between the product color in images and the actual item. Measurement may vary by +/- 1-3cm due to manual measurement.