Adjustable voltage protection value-three-phase overvoltage and undervoltage protector, automatic reset/overvoltage protection/undervoltage protection. A of home intelligent comprehensive protector-master the current and voltage by yourself to 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 by yourself, and automatically detect the voltage in , and then automatically close it after it returns to normal to restore power supply. The current and voltage-intelligent control chip can be set according to the power consumption state, which displays the current power consumption, and automatically switches off when the current exceeds and automatically switches off when the voltage exceeds. Heat and cold resistance adapt to various environments-meet the application needs of different environments and operate reliably in harsh environments. 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 Colour: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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.