... QUAD 2 Alarm 8CH input 2 CH out 3 RS232 RS485 supported 4 LOOP, VGA ... :150*3fps ; NTSC:180*3fps LanguageChinese/EnglishVideo input9 CH BNC,1.0Vp-p,75ΩVCRBNC port,1 in ... 1 outLOOP9 CH LOOPVideo output1 CHBNC,1.0Vp-p,75ΩVGA ... outputYes(option)AudioNOPTZRS485 PTZ,RS232 controlledAlarm ports8 CH alarm input, 2 CH switching value alarm outputKeyboard controlsupported, bit rate ...