Delivered without instructions -- where can a 'user's manual' be found?

Hi, there is a PDF Instructions on the product page -- Product information -- Technical Specification -- User Manual pdf https://images-na.ssl-images-amazon.com/images/I/C1X8DiomGTS.pdf Hope it could help you.

Is the usb output fixed or is it adjustable?

It's not fixed. I had it as high as 13.3 volts in my application of the USB connector. You need to set output to 5v before using any standard usb device.

In the instructions it says to use a diode if using for charging, where does the diode go?

There are two good answers here; when charging a battery with this converter, a series diode should be placed between this device's output and the battery to prevent the battery from attempting to backcharge this device if this device's output drops below battery voltage. In addition... if this device is used as a charge controller for a phototaic (solar) panel, a series diode should also be placed between the panel and this device to ensure that this device will never attempt to backcharge the panel. I suggest the use of a fairly significant Schottky diode for either application.

Constant output voltage with changing input voltage? If I have solar panels as an input with a chaning voltage (+-. 5V) will this affect the output?

Check the limit of input shown in the instruction manual. This unit will regulate voltage or amperage, but not both at the same time.

Drok 5a Buck Converter | Desertcart Saint Vincent and the Grenadines

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Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power your projects with precision and confidence — don’t get left in the dark!

VERSATILE USB PORT - Charge or power USB devices directly, adding convenience and expanding your project possibilities.
REAL TIME MONITORING - Stay informed with a crisp LCD screen displaying voltage and current simultaneously—no guesswork, just data.
ROBUST SAFETY FEATURES - Built-in protections against over-current, short-circuit, reverse polarity, and overheating keep your devices and workspace safe.
PRECISION POWER CONTROL - Adjust output voltage from 1.5V to 32V with fine-tuned accuracy for all your DIY and professional projects.
COMPACT DURABLE DESIGN - Sleek protective case (easy to assemble) ensures durability and portability, perfect for on-the-go professionals and makers.

The DROK DC Buck Converter is a high-performance adjustable voltage regulator supporting input voltages from 6V to 32V and output from 1.5V to 32V at up to 5A current. Featuring a large LCD display for real-time voltage and current monitoring, it includes multiple safety protections and a USB port for versatile power delivery. Its compact protective case makes it ideal for DIY enthusiasts and professionals seeking reliable, precise power management.

Specifications

ASIN	B07JZ2GQJF
Best Sellers Rank	#28,885 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #100 in Power Converters
Brand	DROK
Brand Name	DROK
Current Rating	5 A
Customer Reviews	4.4 out of 5 stars 1,972 Reviews
Item Dimensions D x W x H	1.57"D x 2.58"W x 0.98"H
Manufacturer	DROK
Maximum Frequency	180 KHz
Minimum Frequency	60 hertz
Model	180080AFA
Mounting Type	Rack Mount
Number of Items	1
Part Number	180080AFA
Power Source	DC
Product Dimensions	1.57"D x 2.58"W x 0.98"H
Specification Met	CE, ETL
Unit Count	1 Count

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