... 16C-F1Main ProcessorHigh Performance Embedded MicroprocessorOperating System Embedded LinuxSystem ResourceLive, Recording, Playback, Backup, Remote AccessVideo/Audio InputVideo16 ChannelBNC, PAL ... 2pcsAlarm Input16chAlarm Output3chRS-4851chGeneralPanelBlue Backlit LCD(IP, Error code, Recording Statement, Temp, Date)Size1U, 360x250x44mm(W*D*H) ... AEBELL Entry Level DVR400 Series 4ch Network DVR/8 ch DVR