1,Protector of combined power source 2,Protector of video signal and control signal 3,spd,suger protoctor Power sourecVideo signalControl signalMax.Operation ... Limit Voltage1KV/μsUp 0.072KA Line to Line≤37VLine to Line≤55VLimit Voltage8/20/μsUp 5KA Line to Line≤900VLine to Line≤900VInsert Loss <0.4dB ... /1212V TD2-14/2424V4050020005TD2-14/220220V4040020004 surge protector(surge,control signal,spd)