If you're having detection issues at your windows, e.g. not registering lifted trucks, etc. You may need to calibrate the detector. Attached to this article you'll find instructions on tuning the detector with a regular sized sedan. This will only work with the LMA1400 vehicle detector. If yours looks different from the one pictured below, we highly recommend you replace it with our most current one. You can purchase an LMA1400 HERE.
Part Number: 9303-0054-0001