Pyle Car DVR  Mobile Video -  Audio Recorder Surveillance System Rearview, Backup and Dash Camera with HD 4 Channel and 12V-24V Input for Trucks, Trailers, Vans, Buses and Vehicles - PLCMDVR15 Pyle Car DVR Mobile Video - Audio Recorder Surveillance System Rearview, Backup and Dash Camera with HD 4 Channel and 12V-24V Input for Trucks, Trailers, Vans, Buses and Vehicles - PLCMDVR15 VIDEO AUDIO RECORDING: A mobile DVR surveillance system that can record video and audio for users safety. Automatic eye for drivers, turn signal automatically show right left, or rear facing camera when turn signal or reverse lights are engaged USER-FRIENDLY INTERFACE: Includes a remote for the software system that has a user-friendly interface. With these, it is very easy to navigate the rearview camera footages, set recording settings, and record record settings ALARM SETTING: Has an alarm setting to input switches and parameters, actions with alarm, alarm output parameters and more. Also allows passwords for multiple users and has built-in H.264 compression to keep files small and maximize SD card INSTALLATION: Specially designed for trucks, trailers, 18 wheelers, vans, buses and other huge vehicles. Securely install the device to your car by storing the DVR on the cars trunk and place upto 4 cameras on rear, windshield and dashboard