This might help
G'Day from Downunder, So I purchased myself 4 x IPC-HDBW5442R-S from a Chinese seller on Ebay https://www.ebay.com.au/itm/Dahua-4MP-AI-Starlight-IP-Dome-Camera-POE-IR-WDR140dB-TF-IPC-HDBW5442R-S-2-8mm/184045076367 Everything looked the goods. I checked that it was a genuine international...
ipcamtalk.com
Thanks for your info.
Anyway this is not my case. I bought this camera last June (2020) and it has been working since then. Yesterday, during a periodic reboot that I do for maintenance, the red triangle appeared... Today I tested the IVS function and it works perfectly, so I went to camera web interface page and... the triangle has just disappeared! I did several reboot, but the triangle has never appeared again.
Very Strange. I am going to contact the dealer to see if they have some answers, but I don't think I'll get useful info.
I can suppose that, sometimes, the cam contacts some server somewhere to check if it is original (it is licensed) but yesterday it was not able to do it. But, what if the camera network is not connected to internet? I will post further update if any.