Adjustable voltage protection value - three-phase overvoltage and undervoltage protector, automatic reset / overvoltage protection / undervoltage protection. A new generation of home intelligent comprehensive protector - control the current and voltage by yourself to ensure the safety of home electricity and keep family away from hidden dangers. Over-voltage, under-voltage, and over-current are controlled by yourself - when the voltage is too high or too low, disconnect the load automatically, and automatically detect the voltage in the line, then automatically close it after it returns to normal to restore power supply. Intelligent control chip for current and voltage can be set according to the power consumption state, which displays the current power consumption, and automatically switches off when the current exceeds or when the voltage exceeds. Heat and cold resistance adapt to various environments - meet the application needs of different environments and operate reliably in harsh conditions. Multiple indications, current and voltage at a glance - high-precision current and voltage display, LCD screen itself does not consume electricity. Product name: Three-phase overvoltage and undervoltage protector Specification: 100A / 63A Color: White Material: Plastic Package Contents: 1 * 3 Phase Over and Under Voltage Protector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The measurement allowed error is +/- 1-3cm.