Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do NOT waste money on this

I had to buy a new $20 battery after one year of life, then the sound won't work, and if it is working sometimes, you also have a very loud hum. What a waste. The camera doesn't stay in place, just flops all the way down. Piece of junk. My baby was screaming and I didn't hear a thing on the moniter.