... optional KD-DS101CTWired,1 channel, CIFKD-DS101CT-WWireless,1 channel, CIFKD-DS101DTWired,1 channel, D1KD-DS101DT-WWireless,1 channel, D1KD-DS101DT-3G1 channel, D1, support 3G ... NTSC; BNC, level: 1.0Vp-p, impedance: 75Ω,Audio CompressionG.726, G711, ADPCMAudio Input1/2/4 channel, RCA port, liner ... * 20Cm(W)* 4.8Cm(H) Net weight 1.82kg 1 channel D1 Digital Video Server with Storage support 3G network