Adjustable LM2596S Converter Reduced Voltage Regulator Power Supply Module Voltage Stabilizer with D

Simple to operate: to turn off the voltmeter, you just need to press and hold the switch for more than 1 second and less than 4 seconds; once the voltmeter is turned off, simply press the switch to turn on the voltmeter; It is easy to operate, bringing convenience to youEasy to use: no soldering iron, reduced voltage regulator with terminal block is also convenient to use, and retain the wire bond point (the input voltage must be higher than the voltage to be output by 1v or more)Output current: the maximum output current can be as high as 3A; The recommended working current is about 2A, more than 2A plus heat sinkNice design: with 150KHz internal oscillation frequency, DC-DC buck converter features low power consumption and high efficiency, giving you good use feelingHow to use:1. Press the button in a short time (1 second) so that 'in' LED lighted, the voltmeter shows the value of input voltage.2. Press the button in a short time (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 a short time (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 to see the voltmeter change 0.1V).size: 6.1x3.4x1.2cmMaterial:ABScolour:As shownPackage Contents:8 x Reduced Voltage RegulatorOnly the above package content, other products are not included.Note: Light 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.