3Pcs DC-DC 4.5-40V Step Down LED Volt Meterr USB Voltage Converter Buck Module 5V/2A
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Perfetto lo consiglio a tutti.
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*****
Sto ricevendo
Mi è piaciuto, buon prodotto
funziona come previsto, grande valore per il prezzo collegato ad una fonte di alimentazione 42v senza problemi
tutto perfetto ed in tempi brevi
Shipping was good and product is working very good
well pack in protective plastic pouch. Works good. Very satisfied