Instruct: Classify the given review into positive or negative sentiment.
Query: Blind as a bat - horrible product

I bought this product a few days ago to put up in my back yard. Setup was easy and the unit appeared to work in 'test' mode by waving my hand in front of it. Left it for a couple days and tried another motion test. NOTHING!!! This unit appeared to be dead. I set the sensitivity to 'Max' and still NOTHING!! It couldn't have detected a Mac truck in my back yard. I recharged it and still nothing. I took it down in frustration and sent it back. In my experience with this product, its not worth the money and aggreviation.