Hello Florio. I'm not sure I understand your question, but it sounds like you want a device to move the gear doors. The best one I know about is a controller that controls servos directly, and can be programmed for a number of functions. It is manufactured in the Netherlands. Let me look up the email address. He owns the company! Tell him I sent you. He will send you any information you need. [email protected]. I hope this is what you need. Lee Robinson ROBINAIRE.