3Pcs DC-DC 4.5-40V Step Down LED Volt Meterr USB Voltage Converter Buck Module 5V/2A
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Perfect would recommend to everyone.
I got one of these and found it so useful that I ordered three more. These units typically showed 0.4V below the rating on my bench supply and multimeter. At 30V+ input supply, a power resistor on the bottom of the board runs a little hot, so take care. A 3D printable vented case for this unit is found on Thingiverse as Thing #2850521 I used one of these, wired to the output terminals to replace the batteries powering six LightMates in my RV. This also left the USB port available for charging a phone etc. when the lights are off.
O produto funciona bem, porém a voltagem apresentada no visor falha ligeiramente em 1 a 2 décimas!
Muito bom produto 5*****
I am receiving
I liked it,good product
works as intended, great value for price connected to a 42v power source with no problems
everything perfect and in a short time
Shipping was good and product is working very good
well pack in protective plastic pouch. Works good. Very satisfied