[BradO]

I used a Guardian Alert Doppler system from Sense Technologies on my 06 H3 and use the Ash300 on my 06 H2. The ASH300 is flawlessly accurate from corner to corner after adding a hitch extender to get it past the spare tire. Before, I got too many false readings. The Doppler system was ok, sometimes picking up elevation changes (driveway for example) instead of obstacles. I did not have to extend it though. Traded my 06 H3 for an 07 H3 and bought another Ash300 for it, same deal, extended the hitch past the spare tire. I highly recommend the Ash300 as long as you extended it from the original hitch. Otherwise it will pick up too many false readings.....