Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Frustrating as hell, doesn't work half the time

We are on our second unit. The first unit was replaced with a refurbished one by the manufacturer at our expense after developing an issue where it would magically drop the connection to the camera.We would have to move it around an inch or two, jiggle the switches, etc. to get it to work again.The replacement unit developed the same problem. It is most frustrating when in the middle of the night when it stops working -- the last thing I want to deal with is making this stupid thing work at 2 am. There are some serious design issues with this device. I am ready to throw this out of the window, but I like my windows and it is cold outside to open them.Save yourself the hassle and invest $80-$100 in a real security camera. I can't wait for mine to arrive.