Instruct: Classify Amazon reviews into positive or negative sentiment
Query: ***NEARLY BURNT MY HOUSE DOWN***

We were excited to see this thermstat and purchased it to regulate a 3 heater zone in our home.After 2 weeks we were happy with the change, and then (Thank GOD I was home at the time) week three:As I fed our small child, the heater turned on then I heard a POP followed by blue sparks shooting out of the thermostat on the wall. Immediately I turned the breaker off, when I arrived back in the house it was smoked...Seriously... This could have happened while we were sleeping, this was on the out side of the baby's bedroom.I am mortified to think of the tragedy that could have occured and blessed it didn't!PLEASE DO NOT BUY THIS! IT IS NOT SAFE!!! PLEASE!!!