with proxy settings

basically its a sensor that if someone gets to close it beeps ( clifford had a talking one which was very loud and worked)

if that person doesnt move away after the 3 rd beep usually then the alarm will go off

but set it up to the siren and air horns then they will know

i will have it on my toad as you can get them but also and internal siren same as under bonnet one so if they do get into my car they are going to have a head ache