Electron Beam Model Rocket Launch Controller

Have had it 4 years, lost it in a field for a month once, rained during that time, found it later on, still works great!!!

I have two of these in my field box and they have never failed me. Great for a lpr rockets!

I have and electron beam launcher. It does work, but not well. I wanted my 5 yo son to launch the rockets maiden voyage, but the safety key is too hard to push down for him so i had to hold it down. The launch button for whatever reason took at least 20 seconds to ignite even an a-series motor and he thought he was doing something wrong.