My friend used to have a company called Boat Patrol, he had a a customized version of a motorcycle alarm system with magnetic switces, motion sensor and also a pager when alarm went off, it also reset itself. We traveled all over and I even had customers in Australia and Europe ect... Most guys compliained because of all the wiring involved( I could instal one in in 2-3hrs, but it was a challenge with some boats) I was off work for 8 months due to a severe back injury and we went to alot off boat shows ect.. Met with West Marine and Bass Pro shops( whom Neal wa sponsored by at the time, he was the owner of B Patrol) and we just could not get a retailer to give us a decent deal to sell them for us. We also could not get any Manufactures to come on board with the system due to the wiring, warranty issues, ect...
We met with a company who could help us create a wireless system but after 4 months we found it just to be too expensive( 1500-2500 retial) with low margins.Sooo... Neal could not market it enough and he had to shut it down 2 yrs later. He was mostly trying to sell to fisherman,yachts ect.. but it just did not fly. We actually sold more in Europe and Australia than anywhere else. I think it a great idea but with my experience I would create a wireless system. Feel free to contact me if you want further info and I'll see where I can help you.