Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Review - Cobra XRS-9930 12-Band Radar/Laser Detector

It picks up a lot of radar traffic. Not sure why it does not react when I see California HWY Patrol behind me. It detects automatic door openers at local stores and airport radar from as far away as 4 miles. Have seen all types of hits but no laser tags yet.