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 30mAOutput Voltage: 0-200Vsize:145 x 85 x 35mmMaterial:plasticcolour:WhitePackage Contents:1 * LED Tester with Power Cable2 * Test Pen with Line1 * English manualOnly 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.