ITEM NAME:26-55 Inch LED TV Backlight Constant Current Driver Board 55V-170V Output Description: LED LCD TV Constant Current Backlight Inverter Driver Board Boost Step-Up Module. Suitable for 26-55 inch LCD TV, universal for all brands and models. Input Voltage: 19-45V; Output Voltage: 55-170V; Default Output Current: 200mA (Adjustable) Connect the resistor soldering spot to RT1 RT2 RT3 RT4 RT5 RT6 can increase the current accordingly. The output voltage is 55V-170V, no need to change it manually, the board will automatically adapt to boost. This board is not available for backlights below 55V. Specification: Size: 90x60x10mm / 3.54x2.36x0.39inch Package Includes: 1 Piece LED TV Constant Current Board Note: Please allow slightly measuring deviation due to manual measurement..This board is not available for backlights below 55V. LED LCD TV Constant Current Backlight Inverter Driver Board Boost Step-Up Module. 1 Piece LED TV Constant Current Board.