Fangrui Product Details Large Discharge Current Capacity, Multi-level Protection, Quick Response And Small Insertion Loss. It Is Applicable To Protect Video Signal, Power Supply Signal, Telephone And Network Signal It Is Applicable To Protect The Data Signal In The Intelligent Control System And Ddn Special Line (such As Rs485 Signal) Technical Details: Function Protection: Data Protector Device Insert Loss: 0.3db Response Time: Less Than 0.5ns Working Temperature: -60 Degree - +190 Degree Max Discharge Current: 10ka Work Voltage: 5v Limited Voltage: 8.8v Installation And Maintenance: In Means The Input End While Out Means The Output End; The Input End Is Connected With The Mission Line While Output End Is Connected With The Equipment. A Protection Device Is Connected At The Equipment End Of Signal Output Source And Input End Of Protected Equipment In A Serial Manner. The Earthing Guide Wire Is Connected With The Earthing Busbar Or -proof System Reliably. Special Maintenance Is Not Needed For The Protection Device; Please Rep