Each year when I reinsure my camper I'm asked if I have a Vehicle alarm and immobiliser and I simply don't know so I put NO. Yesterday I met yet another person who told me about a mate who had their camper stolen so I want to fit both a vehicle alarm and immobiliser. Can any one give me information about these devices. Many years ago I had a car with a secret device that disconnected the battery I wonder if they are still about?