... DS101CTWired,1 channel, CIFKD-DS101CT-WWireless,1 channel, CIFKD-DS101DTWired,1 channel, D1KD-DS101DT-WWireless,1 channel, D1KD-DS101DT-3G1 channel, D1 ... 1KOhmsAudio Output1channel,RCA port, linear outputAudio talk-back input1 channel ,MIC portOverlaid CaptionChannel, Date, Bit rate. position ... Support CDMA, GPRS mobile network. supports 802.11b/g protocol, 2.4GHz, maximum wireless distance can be 100 ...