... : WEB & Windows based software3.2.VideoVideo Input:1/2/4 Channel, 1.0Vp-p, 75ΩVideo Standards: PAL625Line,50f/s,NTSC525Line,60f/sVideo ... Video input, 1 Audio input, 2Data(RS232+RS485), 2 Alarm Input/OutputF8-SH13A-4VT-4AT-2DTR-4CTR 4Video input, 1 Audio input, 2Data(RS232+RS485),4 Alarm Input ...