I'm looking for a CCTV system to use outdoors on a farm. I need 4 cameras ideally, and they need to be wireless. I can get power to each camera easily enough, but networking them with wires isn't really going to be feasible. Is there a solution out there which contains a built-in wireless repeater function within the cameras themselves? If that's not viable, can anyone recommend a simple/robust wireless repeater system that I could use alongside a CCTV system (also happy to get recommendations on the CCTV itself).
I don't have a specific budget in mind, but I was hoping to spend less than £400.