Instruct: Classify the given review into positive or negative sentiment.
Query: Constant False Alarms

It's garbage. I have two of these and they randomly give false alarms. They're absolutely false alarms since I keep them close (since they're useless anyway) and only one will go off (usually in the middle of the night). I'd heard Nighthawk was the best. This unit is a joke. Buy anything else or simply flush $60 down the toilet for the same result.