... DC12V/ power output 5.4/2ch alarm input/outp GPS 3G Wifi car DVR recorder,Mobile DVR,car DVR ,Vehicle ... processor, 10bit sample chips.Video and video systems Video Input From 1CH to 4 CH CVBS video input, 1.0Vp-p, 75 ... outputCommunication Interface RS232,RJ45 10M/100MAutomatically adapt to network interfaceWireless Transmission Support built-in 3G wireless transmission capabilities, WCDMA, EVDO, HSPA, ...