Input voltage range: DC7-80V range. Output voltage range: DC1.4-79. V voltage display range: 1.40-80.00V (accuracy +0.1V or so) Output current setting range: 0-20A. Current display range: 0.00A-20.00A (accuracy +0.03A or so) Adjustment knob: MPPT voltage adjustment, output voltage adjustment, output current limit setting MPPT Function: Anti-backflow: no diodes need to be strung together to connect to the battery. Constant current (current limit): Over power protection: 300W, the output will be turned off when the power is exceeded, and OPP is displayed Model Number:Digital LCD Display, Auto Step Up Model Number:Automatic Step Up Down Module Type: Voltage Regulator Type: boost converter. Item weight: 208g with display Colour: black. Material: PCB. Size: 108 x 64 x 48 mm Package Content: 1 x Boost Converter with Digital LCD Display Only the above package content, other products are not included. Note: Due to the light reflection and monitor settings, the colour of the item in the photos may be slightly different. The allowed measurement error is +/- 1-3 cm.