Fangrui Product Details Fangrui Product Details Fangrui Product Details Adjustable Buck-boost Module: Voltage Range Is Dc 5.5-30v; Output Voltage Range Is Dc 0.5-30v, Can Be Arbitrary Adjustable; The Output Current Range Is 0-3a, Can Be Arbitrary Adjustable, If Enhance Heat Dissipation, It Can Reach 4a; The Output Power Can Up To 35w, If Enhance Dissipation, It Can Reach 50w. With Protection Function: The Volt Former Board Is With Reverse Connection Protection At Input Terminal, Reverse Connection Will Not Burn; Stop The Current From Feeding Back Protection At Output Terminal; Short Circuit Protection; Backflow Prevention At The Output, When Charging The Battery, There Is No Need To Add A Second Anti-backflow Tube. Bright Lcd Display: The Voltage Regulator Module Is Designed With Lcd, Can Display Input And Output Voltage, Output Current And Output Power; Voltage Display Resolution Is 0.05v, Current Display Resolution Is 0.005a; Low Output Ripple, With Lc Filter Button Control: The In/ Out Button Switches The Display Of Input Voltage And Output Voltage; Long Press Can Switch