Feature 1 Easy Adjusting: The adjusting knob can be used to adjust MPPT voltage, output voltage and limiting on the output current, very easy. 2 Stable Working: Excellent heat dissipation ensures stable working performance under high power, and very efficient and reliable. 3 Better Display: Supports real time control on the MPPT regulating voltage, the boost buck converter is very simple for operation. 4 Practical Uses: Allows for extensive application on solar charging, lithium battery charging, regulated power supply and so on. 5 Easy to Install: Designed to have a compact size and a light weight as well, the installation is very simple to finish in minutes.Item Type: Buck Boost ConverterInput Voltage Range: DC7-80VOutput Voltage Range: DC1.4-79VVoltage Display Range: 1.40-80.00V (accuracy 0.1V)Output Current Regulation Range: 0-20ACurrent Display Range: 0.00A-20.00A (accuracy 0.03A)Adjusting Knob: For MPPT voltage regulation, output voltage regulation, output current limiting regulation. MPPT Function: YesAnti Backflow Function: Yes, there is no need to string diodes to connect the battery. Constant Current and Current Limiting: YesOverpower Protection: 300W, over power will turn off the output and display OPP. Product Size: Approx. 108 x 64 x 48mm / 4.25 x 2.52 x 1.89inApplication: For solar charging, lithium battery charging, LED constant current drive, regulated power supply. Package List1 x Buck Boost Converter