Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Just plain junk !

I do not recommend this cheap tester, I used this tester 3 times in 2012 and It was very hard to see if the lights are lit when using it. I stored it in my shed over the winter, I went to use it again and it will not work anymore.Wow...it just quits working all on its own by just sitting in a shed ! Unbelievable !!! This is just plain junk, don't waist your money on this product.