Datasheet and Solution of MDVR CCTV System for School Buses.   Price of Mobile DVR MDVR [email protected]+Tax 4-ch video & 4-ch audio input (BNC interface), CH1~CH4: 25/[email protected], pluggable Anti-vibration HDD box(1*SATA intterface, 1*USB interface) , 1*SD/SDHC slot, alarm I/O: 8/2 DS-M5504HMI/GW/Without GPS[email protected]+Tax 4-ch video & 4-ch audio input (BNC interface), CH1~CH4: 25/[email protected], pluggable Anti-vibration HDD […]