Electron Manual Controller Classic & Next Gen ER Manual ControllerElectron Manual Controller Classic & Next Gen ER Manual Controller An easy and safe way to quickly extend and retract your landing gear. This is all you need: Sometimes you just want to test one retract, or maybe you have to deploy or retract your landing gear to assemble your model, but you really dont want to use your radio and receiver for that. The Manual Controller allows you to do this with a single connection. All you need is a cable and a