MPA actuators can remotely actuate any number of valves and switches simultaneously in different strategic locations from a single miniature 3-way valve, make an ES-1 into a pressure switch, act as an air relay, operate the MAV-4D from a single impulse, serve as a pressure interlock or safety device, provide an electric take off from a pneumatic source to start and stop power, actuate electric counters, indicator lights on panel boards, etc.