With voltmeter display and voltmeter can be self-calibrated

The voltmeter can be closed, which can be easily achieved by tapping the left button when it is not needed

Reverse connection protection, reverse connection does not burn Overheating protection and short circuit protection

The output voltage must be higher than 4v:
the input voltage goes below 4V, the voltmeter won’t work and the display will go off.
To turn it off, just hold the switch for 1 to 4 seconds and let go.
Once it’s off, you can turn it back on by tapping the switch quickly

Note:
When encountering the problem that the output voltage cannot be adjusted and is always equal to the input voltage, please rotate the potentiometer counterclockwise for more than 10 turns, and then use the module to adjust the voltage normally.
Because when the buck module leaves the factory, the default output voltage is around 20V.

Package include:
2 x lm2596 step-down module

• LM2596 with voltmeter display and the voltmeter can be self-calibrated. It adopts a more advanced voltage microprocessor, the input voltages from 4.0V to 40V and outputs between 1.25V and 37V(The input voltage must be more than 1.5v higher than the output voltage)
• Touch the button to switch between measuring input or output voltage, and there is an indicator light to show which voltage is being measured, and the setting is saved, even if the power is turned off and on again.
• Terminal blocks, it is easy to use without soldering iron, and the connection points of welding wires are reserved.
• Buck converter with reverse connection protection, overheating protection and short circuit protection function
• The output current is 3A, and it is recommended to use it within 2.0A. The high current needs to strengthen the heat dissipation, output power is 20W, please strengthen the heat dissipation if it exceeds 15W.