Fangrui Product Details 1.constant Current And Constant Voltage Design, This Boost Converter Has Dc9-60v Input And Dc10-120v Output Voltage, High Conversion Efficiency And With The Max Current Of 15a. 2.1.77 Inch Tft Digital Display Screen, Clearly Displays Real-time Output Voltage, Real-time Output Current, Real-time Output Power, Trigger Mode, Input Voltage, Etc.when The Input Is Turned On, The Output End Has Power Output All The Time, And The Voltage Is Equal To The Real-time Output Voltage Displayed In The Interface. 3.two Kinds Of Power-on Program Trigger Modes Design, Auto Mode: Power-on Boosting Program Runs Automatically; Power-on Boosting Program Does Not Run; Long Set Button For 6 Seconds To Switch The Trigger Mode. 4.multi-parameter Setting, Support Voltage Setting, Current Setting, Data Group Setting, Double Click Set Button To Enter Parameter Setting Mode. 5.support Call The Data Group, Click +or -to Switch Data Group, Only Call, Not Starts Boost.starts/stop Running The Boosting Program, Click Okbutton In Off S