That’s normal. The hardware is the same, it’s the firmware that determines PAL or NTSC. With the newest firmware on certain models you can switch between NTSC/PAL by changing a setting. Worst case is you load a different firmware to switch between NTSC/PAL.I did see the PAL version available, but not NTSC.
Would you mind posting a link to his website?It looks like the Hong Kong airport is open for business so I just order my final IPC-HFW5241E-Z12E camera today. The four of them will cover the streets on my 4 way intersection. I am really pleased with the way the other 3 have turned out.