It seems that the primary focus of your problem is the switch and how to control it. For that you might need to know what kind of electricity that switch is controlling. That would probably be electricity coming from whatever sort of batteries you are using. Knowing the battery type and how many there are should tell you the voltage and current that the switch is supposed to control. Where the electricity goes after that is beside the point. That's why it's not really a laser question.
There are two sorts of people who might know the answer to your question. First, engineers who work with remote-control systems such as automatic lawn sprinkler systems, or oil refineries which have hundreds of miles of pipes with remote-control valves.
The other sort of people are hobbyists and owners of hobby shops that sell things like parts for do-it-yourself remote-control model cars, airplanes, etc. You can probably find them online somewhere, on discussion boards devoted to those kinds of hobbies.