... 1 ch output 4 Ch DVR with cheapest price and best quality Welcome to inquiry 1.Specification of 4 ... mouse, back up USB flash 2.2, remote and PTZ control*Support 2X SATA HDD,1000 G Bytes ... FAN & with DVR Switch on/off*3G Mobile Phone Surveillance and E-mail*English, Persian ,Italian ,Spanish ,Portuguese ,Russian ,Greek , ... ch input/ 1 ch outputAlso we have 8 CH and 16 CH DVR8CH DVR1.Vedio:8 ch input / 1 ...