Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Very Disappointed

Should be a simple concept...when a car drives by, the buzzer sounds. Not the case here! After meticulously following the directions, calling customer support and waiting 18 minutes (I was determined) to speak to the tech for advice, I'm boxing it up and sending it back. I have a driveway in a wide open field, less than 500' from the base. Never could get it to work. It would buzz at nothing, and NEVER buzz when a vehicle passed. Don't buy it!!!