1. Surge And Undervoltage Protection: Automatic Surge And Undervoltage Recovery Protection Devices Meet Modular Design Standards.^2.Reliable Performance: The Product Board Uses High Quality Electronic Components For Reliable Performance.^3.Automatic Protection Function - When The Power Supply Is Unstable, Its Protection Function Will Be Activated Automatically, Once The Voltage Exceeds A Limited Range Of Products, It Will Be Automatically Cut Off To Protect The Safety Of Electrical Equipment And Personnel.^4.Open In One Minute: When The Power Returns To Normal, The Device Will Turn It Back On Within One Minute.^5.Green And Red Light Display: Green Light Indicates Power Supply Is Working Properly, Red Light Indicates Over Voltage Or Under Voltage.