Ah, <R68> parts A,B,C,D indicate what should be on the robot, (A
ressure gagues; B
ressure relief valve; C
ressure switch; D:Vent valve) However in <R70> part D it states:
D. If the compressor is not included on the ROBOT (under the provisions of Rule <R69>), the regulator and high-pressure gauge may be located on-board or off-board, provided all other pneumatic rules are satisfied. Note that if the regulator is kept off-board the ROBOT with the compressor, then only low-pressure (60psi or less) “working” air can be stored on the ROBOT.
I'd imagine the pressure switch (C) could also be off-board?
I realize the usual case is to have a tank of air to run a cylinder. The design we have is with a spring return cylinder to release a lock pin on the minibot deploy. Only the air in the cylinder is needed. Very compact and easy to install.