Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Idiotic design.

This thing was designed by idiots. First issue, it is AC instead of battery operated for the indicator. That might be tolerable... Except the connect the AC plug is at the TOP of the unit. So you can't hang this on a wall because the cord is on top and it just flips off the front of the device. Second issue... The AC adapter is a full size block plug. So it takes up a lot of space on your outlet. If you plan on installing it say in the same outlet as a phone charger or base unit good luck. Third issue.... Why doesn't it have a button to control the door? Wouldn't that make sense? If you are putting this sensor in your house, logic dictates that you don't want to be walking to the garage to check on it. Well, if it's open, why would you want to walk to the garage to close the door? HELLO!If they made this with a controller button and made the AC plug less annoying, it might be worth $20. But this thing is garbage. Glad I got it for free in a promotional bundle.