DC-DC Buck Boost Converter Step Down Voltage Regulator Adjustable DC 3V-30V With Constant Current

voltage converter input voltage range is DC 5-30V, output voltage range is DC 0.5-30V, output current of natural cooling is 3A, with strength sinking output current can reach 4A.

Boost: no matter the input voltage is higher than 12V or lower than 12V, the voltage can be steadily output 12V.Constant Current: input any value within DC 5-30V, can directly charge storage battery, lithium battery, AA battery; besides, it can adjust LED brightness of constant
The higher multitier potentiometer is used for adjusting the output voltage; the shorter one-loop potentiometer is used for adjusting constant current value. If you need to increase voltage /current, please adjust the corresponding potentiometers clockwise, whereas counter-clockwise adjustment.Setting Value of Constant Current without Multimeter: using one-loop potentiometer with scale to set the constant current value will be more easy.
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What's In the Box

1 step down boost converter