I've been looking for a CCTV system for 6 school buses and haven't found anything that hasn't cost a fortune. I gave it a try and was pleasantly surprised. Each installation took about 2.5 hours. All 4 cameras are 1080p and it shows that a 256GB SD card can record for around 88 hours (there is also a second slot for another 256GB SD card). The included 10m cables extend to the center of the back of the bus. I have one camera facing the front (see image), another camera to capture the inside of the bus from the front, another about halfway to capture the back of the bus, and another to capture the side entrance door to view to see who is boarding and exits. I wouldn't hesitate to buy them again if I need to install more.
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