Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Need to replace these pieces of junk

As everyone else mentioned these suck. The last 3 nights now I've been woken up thinking there is a fire somewhere. I replaced all batteries, was good for 1 night and then they started again. I've had to disconnect them so I can sleep and won't be randomly woken up. Why its only at night while I'm sleeping I have no idea. Have lived in my house for 3 years and never had any issues. Extremely annoyed and replacing all of them.