@joseph_1979 Thank you for your reply. I installed the version as you mentioned from the github site. v3.1.0.956_22041512. I still do not have Pet detection. Only People and vehicles.

I bought one RLC-410W in 2020. (Hardware version IPC_51316M) This camera doesn't have any smart detection.
Two years later (Sep.2022). I wanted to buy two new 410W Cameras. I was really happy because the 410W was not available anymore but 510WA with smart detection yes.
So I ordered two RLC-510WA Cameras. I was surprised after they arrived, because on the Box was an RLC-410W. After unboxing I realised they have newer hardware versions (IPC_30K128M4MP). The client recognised it as 410W. They definitely have Pet detection, this works really well. Because of that reason I ordered a new one one last week (Nov.2023). (RLC 510WA) I am really sad right now, because this camera (IPC_523128M5MP) doesn't have PET detection, with the latest firmware (v3.1.0.1387_22100633). How can it be, that the newer version doesn't have this function but the older version has?