Brand: MELIFE

Model: LM2596s

Parameters:
Input Voltage: DC 4-40V, error ±0.1V(Note: digital display dose not work when input voltage is under 4V)
Output Voltage: DC 1.25V - 37V
Output Current: 3A(Max). It is recommended to use under 2A
Size: 6.6x3.9x1.8CM
Weight: 22g
NOTE: When using high power, please add a heat sink to the power supply chip.

Fuction:
Built in over-temperature protection function
Built in current limit function
Built in output short-circuit protection function

How to Use
1. Press the button in 1 second so that "in" LED lighted, the voltmeter shows the value of input voltage.
2. Press the button in 1 second again so that "out" LED lighted, the voltmeter shows the value of output voltage.
3. Rotate the top screw of potentiometer clockwise to boost the value of the output voltage, anti clockwise to reduce it.
4. Long press the button between 1 and 4 seconds to turn off the voltmeter.

How to adjust accuracy of input/output voltage
(for the person who need a highly accurate value of number)
1. Long press the button for more than 4 seconds, then release, voltmeter and "in" LED flash in synchronization entering into the input voltage calibration mode.
2. Press the button in 1 second to adjust the value (range from -0.5~0.5V, positive means to rises units, negative means to minus units) (Due to a unit is less than 0.1V, so you have to continuously press 1 to 5 times till the voltmeter change 0.1V).
3. Long press the button for more than 2 seconds and then release to enter the output voltage calibration mode.
4. After calibration, long press the button for more than 2 seconds all parameters will be saved automatically and back to the voltage display.

Package Included:
2 x LM2596s DC Buck Converter

• High Precision: Featuring 36u thickened circuit boards and high-Q inductance, the buck converter comes equipped with an output LED indicator and superior solid-state capacitors, all of which work together to effectively filter out high frequency noise. This versatile unit is an ideal choice for various electronic projects.
• Easy to use: After connect to a power source, kindly use a mini screwdriver to adjust the screw located on the blue potentiometer, which allows you to either increase or decrease the output voltage. Use a multimeter to monitor the voltage and adjust the potentiometer accordingly until the desired voltage is reached. Remember to increment the voltage by turning the potentiometer clockwise, and decrease it by turning it counterclockwise.
• Product specifications: Input Voltage: DC 4V to 40V (input voltage must be 1.5V higher than the output voltage). Output Voltage: DC 1.25V to 37V voltage is continuously adjustable.
• Safety first: The switch features reverse voltage protection, over-temperature and short-circuit protection, thereby enhancing its safety usage significantly.

Color: Blue