1. Made of high-quality materials, sturdy and 2. All potentiometers can be adjusted manually without a screwdriver 3. The chip has enhanced heat dissipation, is reliable and stable, and has high power. 4. MPPT adjustment voltage is displayed in real time, clear at a glance 5. Wide range of uses, solar charging, lithium battery charging, LED constant current drive Input voltage range:DC6-80v Output voltage range:DC1.3-78V Voltage display range:1.40-80.00V (accuracy +0.1V) Output current adjustment range:0-30A Current display range:0.00A-30.00A (accuracy +0.03A or so) Adjustment knob:MPPT voltage adjustment, output voltage adjustment, current limit adjustment MPPT function:Yes Anti-backflow:When exposed to sunlight without insufficient charging current, the battery not burn due to backflow Return current is 0.5-40mA. It is recommended to connect a diode when charging. Constant current (current limiting):yes Over-power protection:700W, the output is turned off when the power is exceeded and 0PP is displayed. Type:Without Display Colour:Black Material:ABS Package Contents: 1 * Automatic step-up and step-down power supply module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.