●  4-ch video surge protector device designed according to
the standard of GB/T18802.21-2004/IEC61643-21:200.                                                        
●  The device 's nominal operating voltage is 5V,
max continuous operating voltage is 6V,
limiting voltage lower than 20V.                                                                                                                                 
●  It features multi-level protection, high capacity for through-flow,
low limiting voltage, quick reaction time, less insertion loss.                                                                                                                        
●  It adapts to overvoltage protection for security video signal and power,
protecting the device from the damage of induced overvoltage,
switching overvoltage and static discharge.                                                                          
●  It's widely used in security monitoring system, environment monitoring system.