Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Disappointed - Not Loud Enough

I was disappointed with this product. It was advertised as having an alarm of 84 dB. It is more like 48 dB. I wanted to use this to alert me if the power to my sump pump went out. I can not really hear the alarm. So now I just listen to hear if the pump is running - just like before.