1. Ergonomically and qulity standard for point measuring high voltage. 2. , easy to handle. 3. The ground wire has a plug connected to the tester and an alligator at its other end. 4. You can test all CCFL lamp, and be aware of not generate high voltage arc that can damage the lamp. 5. It's very easy for test LCD screen, CCFL advertising signs, motor angel eye for hid headlights . A good tool for maintenance personnel ! When we repair LCD screen or car angel eye for hid headlights, and see a little shadow from very dark screen or get inverter protection, it's very difficult to know if problem comes from the CCFL tube or inverter board. Now, use ours tool, easily find the problem. The PLL Pluss tester can test all sizes of CCFL lamps from 3 inches to 55 inches. Red pushbutton ON/ OFF safety. Connecting the 12V DC adapter (not included) to the tester, the LED will be green indication that power is ready. The tester will have high tension voltage at its tip wihle the LED turns red (indicationg alertness) by pressing the button, then you can test the lamps. The LED will turns green (sleep) by pressing the button for 3 seconds. Imput: DC 12V 2A Fits for: 3-55 inch TV CAUTION! 1. Do not connect the lamp to the tester for long time. Always make sure contact the probe tip to the ending of the lamp to be tested. 2. Be careful not to be hit y high voltage! Different batches may have color differences in appearance, which does not affect use. Colour:Royal blue Material:Metal+Plastic Package Contents: 1 x CCFL Tester 1 x Output Cable 3 x LCD Display Adapt Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.