... , CBR compression 3. Compound packet,video,audio, GPS, Vehicle Speed ,PTZ and alarm in and outVideo input : 4 channel CVBS(PAL ... /out : 1channel Sensor in ,1channel alarm out,( on , off, earthing)PTZ serial : 1 channel RS485, support Pan/Tilt/ Zoom( Pelco-D ... the D1 quality), support for real-time monitoring, control, playback, PTZ control and video.UHF Can be used separately, also can ...