Vktech Universal Neon Tube Lamp Fluorescent Light Bulb Tester Malfunction Detector 100% Brand New and High Quality With this tester, you can quickly find the reason why neon lamp does not turn on, and then repair it This tester is powered by dry batteries, easy to use and carry It is a great tool for repairing neon lamp Only test for Neon Tube, Fluorescent Tube