1、Safe MDVR: Industrial grade design, more secure RCA head interface, 9 to 36V wide voltage input, overload protection, short circuit protection, reverse connection protection. 2、Features: Support for license plate numbers, time, driving information and other characters overlay. The host can be turned on, off and delayed. You can add left turn, right turn, and reverse auto full screen display. 3、Switch Door Recording: The switch door recording function can be added, and the video files are separately packaged during the opening process, convenient for viewing and higher efficiency. 4、Wide Application: The mini MDVR is extensively applicable to school buses, buses, tank trucks, engineering vehicles, large trucks, boats, coaches, yachts, etc. 5、H264 Compression Algorithm: Adopt H264 video compression algorithm, video takes up less space on the hard disk and Long storage time, Support 128G memory card (not included). 6、4 Channel MDVR: The vehicle recorder supports 4 channels of video input and 4 channels of audio input, and supports 1 composite video output and 1 audio output. 1 x Video Control Box1 x Power Cord1 x Signal Line1 x Remote Control1 x Manual  Item Type: Mobile Digital Video RecorderMaterial: ABS + MetalRemote Control Battery: 1pc CR2025 button battery 3V (not included)Video Format: PAL/NTSC (automatic identification, note: the camera (not included) needs to be connected before power on, the default is PAL format)Video Parameters of Each Channel: Resolution: 1920x1080 or 720x576Refresh Rate: 25 frames per secondPeak Value: 1Vp-pImpedance: 75ΩVideo Interface: 4 inputs (RCA interface, support CVBS and AHD720P, AHD1080P), 1 output (RCA interface, 720P AHD or CVBS)Video Recording: Memory card (less than or equal to 128G, not included), recording format is AVI, h.264 compressionAudio: 1 inOperation Screen Mode: 2.4G remote control / infrared remote control / wire control: high level triggerPositive/Mirror Selection: OFF/ONRecording Mode: Independent recording for each channelDefault Boot Screen: The default boot 田-shaped or H-shaped four-screen mode, selectable in the menuPicture mode: 田-shaped four-picture mode, H-type four-picture mode, picture-in-picture and single-picture full screen and other picture modesHost Operation Power Consumption: 2WOutput Power: NoneRated Voltage: DC 12V/24VMaximum Voltage Range: DC 9-36VWorking Temperature: -20℃ to +65℃Camera Input: 4 ChannelsStorage Function: Not SupportedOperation Method: Remote ControlPower Loss Protection: YesVideo Interface: RCA interfaceApplication: For school buses, buses, tank trucks, engineering vehicles, large trucks, boats, coaches, yachts, etc.