Voltage and adaptive output without adjustment. Support lightinfg multiple types of s-ingle LED beads. Soft s-tart with eye-protection and brightness gradient output. Support positive and negative electrode test pen short circuit protections. Support multiple types of series-parallel connection LED light bars. No need to remove screen: test LED TV backlight and other LED backlight of any size without detaching screen. Button type bracket structure design. Plug Type: EU Plug, it applies to Indonesia, Germany, France, , Italy and so on. Output current: Less than 30mA Output Voltage: 0-200V size:145 x 85 x 35mm Material:plastic colour:White Package Contents: 1 * LED Tester with Power Cable 2 * Test Pen with Line 1 * English manual Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.