NOVATECH Servo Tester Mini - Junk This item is a junk item. It was included in a used radio-controlled car set I purchased several years ago. I wanted to check its operation before listing it, but I don't know how to use it, so I haven't been able to confirm its functionality. Therefore, I am listing it as junk. The exterior appears to be free of noticeable scratches. I have never used it, and it has been stored at home for several years. Please refrain from purchasing if you are concerned about the above. For those who understand that this is a junk item, returns and refunds are not accepted. Thank you.