1,Sixteen ports video signal SPD 2,Apply to monitor system 3,insert ... loss low 4,20 years` experience Sixteen ports video signal SPD: NKP-TEL-4UProduct descriptionThe product is applied to ... installation1. The lightning protection devices is installed between Video signal channel and the protected device, the output termination is ... grounding line: BVR ≥ 2.5mm2 Sixteen ports video signal SPD: NKP-TEL-4U