DC-DC Voltage Regulator - Adjustable Step-Down Power Supply Module with Display

The voltmeter displays a measurement error of ±0.1V, with a range of 0-40V.
Touch the button to switch between input and output voltages, and an indicator light will illuminate to show the measured voltage.
Power-off memory function displays the reading after the last measured voltage value.
Press and hold the touch button for 3 seconds to turn off the LED display; press the button again to turn it back on.
Strip terminals allow for easy, solderless use, and the retaining wire connection point