DH-DVR0404M is a robust mobile DVR for transit system. The product features DIN size with easy installation design. It adopts military aerospace grade technology and imported materials to enhance the anti-shock and anti-vibration ability. It has electronic and software vibration proof design as well. The device functions with a 8V to 60V wide power range. This product supports extensional interfaces including wireless router, GPS, alarm, and car status reminder. DH-DVR0404M provides full monitoring and record functions, multiple record search, information management, and USB 2.0 for backup.