Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't waste your time or money!

I have purchased 2 different units from this company and niether one works. One has been on my wall for a month and has yet to set the time or read the outside temp. I have followed all the procedures several times with no results. I have sat on hold on their 800 number for 30 minutes before giving up. Be warned if you purchase.Thanks,Georgi