School Bus Camera System with 7' Built-in DVR Quad Monitor

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TFT-LCD monitor: DF-737DVR (built-in DVR and Quad)
Display screen size: 7' digital screen
Display resolution: 800RGB (H) x 480(V)
Color system: PAL/NTSC
OSD MENU function: separately set each camera trigger priority reversing image delay time 0 to 30' mirror/normal set DVR: image/REC/REC mode/playback/system setting
DVR video compression: MPEG-4
DVR audio compression: PCM
DVR video resolution: 800 x 600/720 x 480/640 x 480/320 x240
DVR video frame: 20fps at 800 x 600, 30fps at 720 x 480, 30fps, 640 x 480, 60fps at 320 x 240
DVR recording mode: manual, video detection (including motion detection), alarm
DVR play back: full screen
DVR motion detection: zoom setting, sensitivity setting
DVR video recording quality: high/middle/low
DVR saving card: supports one SD card
DVR saving capacity: supports one SD card (256M to 32GB)
4CH video input: 1.0Vp-p75©
Wide view angle: (up/down): 45/65 (left/right), 65/65° (CR﹥10)
Brightness: 380 (auto dimming)
Contrast ratio: 500:1
Operating voltage: DC 8 to 32V (system power max 20W)
Operation temperature: -20 to 70
Storage temperature: -40 to 80 RH95% max
External dimensions: (D x W x D) (108 x 100 x 28)mm
Weight approx: 450g
Color camera: side view camera
Image type: 1/3' color Sharp CCD
Horizontal resolution: 420TV lines
Usable illumination: 0 lux (IR LEDs on for night vision)
Viewing angle: 130°
Waterproof of grade: IP69K
Shockproof: 10G
Video output: 1.0Vp-p, 75©
Operation temperature: -20°C to +70°C
Storage temperature: -30°C - +80°C
Operating voltage: DC 12V(from monitor)
External dimensions: (D x W x D) 55 x 74 x 63mm
Weight approx: 280g
Accessories: auto cigarette lighter, user manual, full function remote controller