CCTV Surge Protective Device: 1. LDY-BNC/ 2. Un:12V,Uc:18V 3. CE Certificate and Five-year product quality guarantee CCTV Surge Protective DeviceApplication range:LDY-BNC surge protective device series SPD for signal are applicable to coaxial transmission device applied in main thin cables, thick cable, network wire, CATV, video monitoring device, public television, satellite television receiver ...