@reolink_221560981663948 Hereunder please find my input to the queries raised.

Reolink HHP and NVR only communicate with cams when both entities are on the same network. In the short term I am not seeing that they will allow management and recording for cams which are outside the LAN such as 4G.Yes, you can connect to 24 cameras but there is a limit on simultaneous streaming through the eth port. Unfortunately the eth port is only 100Mbps and so if you are streaming from eight 8MP cams then you already reached the 100Mbps bandwidth. This should have been 1G from day 1. 1G port costs the same as 100M.No, if communication between the HHP and the camera is lost and during these period there were recordings, the HHP will not sych with what is on the SD. We have requested this to dev team.Yes you can playback recording on the SD. On the client you have the option to select the source (either SD or HHP).It is quite easily to delete and add cam on the HHP.Configurations are stored on the EEPROM of the cameras. No. On the HHP you set the IP of the FTP server plus additional parameters. On the camera side you activate FTP and some parameters. But the IP of the FTP server is defined at the HHP. This means that the file is ftped from the camera to the HHP and from the HHP to the FTP server. Yes. However, the notifications sent from the HHP relate to the HHP operation such as HHP lost contact with a camera. Push .message notification from the camera doesn't involve the HHP. No, its all or nothing affecting every camera connected to the HHP.

Sound alarm on RLC-410