Hello. I have a 4 channel recorder. I have three AHD cameras connected to it through BNC plugs with one rotary. I used all the connections that this recorder has. Works well. Installation and commissioning were easy. With time, you want more and I intend to modernize the equipment a bit with an additional PTZ rotary camera. This is where the problem begins due to the connection of the second PTZ camera and I already have the RS 485 plug busy. Here's my question, how to connect and operate two rotating cameras on this recorder. Is the RS-485 SEPARATOR WITH OPTOISOLATION ORS-22 suitable for it? I was already thinking about an additional joystick, ie DVR camera, joystick handle RS485 PTZ speed Dome Camera Keyboard controller for control, but I also don't see that to connect and use it. And what to do here !! ??