Is it really necessary to place the Rachio controller 15 ft from the pump relay? Is this an issue with RF or wifi interference? It’s not going to be possible for me to do that, the shed I’m putting them in is only about 8ft square. My pump is 1hp, 120 volt AC and the start relay is a simple 24v AC spdt. Would really like to avoid stretching these things out. Thanks for any more info on why this is suggested.