1. This product is suitable for computer maintenance personnel and staff who often need to test messy models. The built-in 55 programs can test almost all the EDP signal interface LCD screens on the market, and the compatibility is very strong.    2. This product has super short circuit protection function, no matter if you plug in the wrong screen cable, use the wrong screen cable, the screen itself is short-circuited, irregular operation and other reasons, it will not cause burn-in or screen burn-in, it will only alarm , the buzzer sounds for a long time, prompting you to cut off the power, find the reason, and correct the error.    3. This product can be tested without a computer, and it can test 15 different color images, including red, green, blue, white, black, gray, purple, etc., by directly supplying 12V power supply, which is enough to test all the phenomena of bad LCD screen.    4. There is a clear operation process on the shell of this product. You only need to operate it step by step according to the flow chart. It is very simple. More importantly, the operation flow chart is in Chinese and English, which is easy to use.    5. The shell of the product is very light, easy to carry to any place for testing, beautiful appearance, simple and elegant.