The Electronic Ballast Tester from GTi Products is a must for everyone who installs or who is responsible for maintaining fluorescent lighting fixtures. This simple, two-step test saves time by quickly identifying a faulty ballast. There are no wires to connect and no dismantling of the fixture in question is required. Simply touch the tip of the antenna to each end of the light fixture and press the test button to see if the ballast is working properly. The electronic ballast tester eliminates the need to perform a series of diagnostic tests to "rule out" possible problems such as a bad bulb, starter, or fixture. The Electronic Ballast Tester makes testing faulty ballasts quick and easy, with a device that is simple enough for virtually anyone to use.