Description Car DVR: H.264 video compression. 4CH 720P HD AHD MDVR, It works with all AHD cameras, More Clearer. 4 Channel 720P AHD real-time recording (720P/D1/HD1/CIF for selection) Support video searching function so that we can easily get files of a certain period. Support realtime playback, as well as review the video on computer Equipped with high-speed video recording at 30fps per channel. Recording video can be overlaid with date/ time, plate number etc.. Optional file packing time to meet your real requirement. Support wide range of voltage input from 12V to 36V. Output 12V DC 3A for external devices. Support 1 SD card, and (128GB) Support auto recordng , manually recording , alarm recording , fire off recording. Support 4CH alarming inputs and 1CH independent alarm output (open/close door, brake, back up, motion detection etc). Four channel 4pin connector video and audio input, one channel AV connector video and audio output. SD card design for storage, more convenient and vibration-proof than hard disk version. Camera Specification: Power Voltage:DC 9V-26V Image Sensor: 1/3" CCD Camera . Scanning System: PAL/NTSC Effective Pixels: 720x540 pixels Resolution: 480 TV line Video Output: CVBS 1.0VP.P.75ohm AGC: AutoS/N Ratio: Better than 48db Electronic Shutter: 1/60~1/100.000 Seconds Operation Temperature: -40C~80C RH95% MAX/-10C~50C RH95% MAX Storage Temperature: -40C~105C RH95% MAX/-20C~60C RH95% MAX Waterproof Grade: IP 68 Car Monitors: Screen size:7 inch Display Format:16:9 Contrast: 500:1, Resolution: 800*480 Power Voltage:12V-30V DC, Power Consumption;<=6W Item type:Parking Assistance Monitor . Operate System:PAL/NTSC Video Input: V1/V2.auto switch Operating Voltage:DC 9V-26V