Features: Wide voltages, unobstructed input and output. Double isolation, switchable high and low voltages. Multiple light source testing: can test any LED strips, light source on the light board, light beads, etc. No need to dismantle the screen: LED tvs backlights and any size LED backlights can be tested without dismantling the screen. Test voltages: It can test the voltages parameters of various components, such as the voltages stabilization value of voltages regulators and the withstands voltages value of electrolytic capacitors. Test circuit: It can test the conductivity, leakage, etc. of the circuit. Specifications: Material: Plastic Power: 12W Input voltages: 85-245V Output voltages: 0-300volt Brightness:Standard,High Brightness,Ultra Brightness Type:CA 300L,CA-300Volt,CA 300S Package Includes: 1Piece LED Tester 1Piece Power Cord 2Pcs Test Pen 1Piece User Manual note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.