Mini Vehicle DVR for RV Van Truck - 4 Channel 720P Digital Recorder1、4‑Channel DVR: The driving recorder supports 4‑channel video input and 4‑channel audio input, and supports 1‑channel composite video output and 1‑channel audio output. 2、Characteristic: Digital video recorder supports for license plate number, time, and driving information overlay. The host can be turned on, off, and delayed. You can also add left turn, right turn, and automatic full screen display when reversing. 3、Switch Door Recording: You can also add switch door recording function, and the video files are packaged separately during the door opening process, which is convenient for viewing and has higher efficiency. 4、Multiple Protections: Professional manufacturing, safer RCA head interface, 9 to 36V wide voltage input, and has multi protections, such as overload protection, short circuit protection, reverse polarity protection. 5、Wide Application: Mini MDVR can be widely used in school buses, buses, tank trucks, engineering vehicles, large trucks, ships, coaches, yachts and so on. 6、H264 Algorithm: Digital video recorder adopts H264 video compression algorithm, the video takes up less space on the hard disk and has a long storage time, and supports 64G memory card (not included).