Adjustable voltage protection value - three-phase overvoltage and undervoltage protector with automatic reset, overvoltage protection, and undervoltage protection. Home intelligent comprehensive protector - monitor current and voltage to enhance home electrical safety and help protect your family from potential hazards. Control over-voltage, under-voltage, and over-current conditions - automatically disconnects the load when voltage is too high or too low, detects input voltage continuously, and automatically reconnects power when voltage returns to normal. Equipped with an intelligent control chip that allows settings based on power consumption status, displays real-time power usage, and automatically cuts off power when current or voltage exceeds safe levels. Heat and cold resistant design ensures reliable operation in various environments, including harsh conditions. Multiple indicators provide clear visibility of current and voltage - features high-precision current and voltage display; LCD screen does not consume additional 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: Other items not included. Note: Lighting effects and display differences may cause slight variations in color between the image and the actual item. Measurement error allowed is +/- 1-3 cm.