Thread: What is the best equipment to use when controlling power of multiple equipments from a distance of about 400m?

I have seen telephone activated and remote wireless relay controllers. I need to know other possibilities.Thanks.

How about through a computer network or internet connection to a remote station? Using I/O interfaces through a serial, parallel or usb port in the remote station computer to any other computer would allow you to control its power, status, control, function, monitor, timing etc. easily and you could write code to suit your needs.