Hey kawan, I'm interested in this type of wireless CCTV (for office use):

Xiaomi Mijia PTZ

TP Link

1. What happens to this type of wireless CCTV when they lost connection to Wifi for any reason? Do they stop recording altogether? Or will the footage still be stored in the SD card inserted?

2. I watched the unbox video here and apparently you need to scan a QR code at the bottom of the CCTV to view the footage from your phone's app. If I'm mounting the CCTV onto the ceiling, wouldn't that be a huge problem? (the QR code will be covered by the ceiling)

3. Which of the above 2 products (Xiaomi vs TP Link) is better in your opinion?

Thank you in advance sifus sekalian!

The links I shared above aren’t wifi ip cam like car dashcams right?