Make sure you read through the links that
@wittaj posted at the beginning of this thread.
I would caution you on the utility of using only the SD card for LPR. If you only record to the SD card you risk not getting the info consistently. You will have to rely on the cam's motion detection to record a plate and will probably miss quite a number of plates. Those misses will probably be the ones you need the most. You need to record continuously, 24/7, to insure you get all plates. To do this you will need an NVR or a dedicated PC running software like
BlueIris. If you don't, you may be happy in the beginning, but when you need the data, you will be very disappointed. So either do it right, or don't do it at all. Also, realize you need to power the cam, so you will need an POE switch or a power injector.
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