Instruct: Classify Amazon reviews into positive or negative sentiment
Query: sound switch doesn't respond

After several months of some use, the sound switch will not respond to the frequency setTHe loud high-frequency sirening sound is not longer working, just the strobe light .Also, the 4 big batteries need to be replace too often.I give it 2 stars because it work well at the beginning, with the loud sound, then it did not longer work ( and I take a great care of the unit)