My wife and I decided that when staying in a campground, we should have a means of quickly summoning help to our RV during an emergency. So, I ordered two key fobs online for less than $4. In less than a minute, I programmed them to activate our Ford F-150 pickup. Using hook-and-loop straps, we mounted one fob over the bed and one by the entry door. Now, in an emergency we can press the alarm button on a fob and cause our truck’s lights to flash and the horn to blow continuously. This alerts people to check on us and also directs emergency personnel to our location.