... VC-MDR6004(4-Channel) Basical & economical HDD vehicle DVRIt’s designed to meet demanding security applications ... Fire TrucksPublic – Buses, Taxi,Trains, Railways, SubwaysCommercial – Boats, Heavy Equipment, Limousines, Taxis, VansTransportation - Freight LinersAviation – Helicopters, Commercial ... Key Features * Embedded digital video recorder for in-vehicle use* Multiple levels of video quality, CIF ...