Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Easy to install Door Bell

This was the best thing since slice bread...Here at work vendors would come and bang on the door all day long in the shipping area.People spoke about wiring a bell and drilling into the concrete wall for years.. Finally I saw this item on line---No Brainer...Thanks the wirless door bell works great and the bell sound is very classy... Everyone likes it.