Hi everyone. Been having a problem with my concept 50 recently - common one i'm sure. All the lorries down my road keep on setting it off According to the alarm it's the volumetric sensor (by the passenger door) that's the problem - led flashes once 5 times when you get back in after it going off. The only adjuster on the car is the one for the glass break sensor so i've assumed that won't do anything. Anyone know how I can make it less sensitive short of pulling it out or buying a new alarm? Starting to get to the neighbours a bit I think. Cheers everyone Adam Edited by: CoRnBuRn