The wording of this rule is confusing to me as well, Ian. I would imagine that the intention is to have a relay or contactor which carries all the current for the robot, pneumatic valve and fuel valve where appropriate which is operated by a separate radio control channel. You would need a fairly hefty contactor to do this for modern heavyweights.

Its a good idea but I havent seen many people doing it. In fact due to the vague wording Im not sure whether my robot meets this requirement or not.