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.

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DROK DC Buck Module, Adjustable Buck Converter Step Down Voltage Regulator 6V-32V 30V 24V 12V to 1.5-32V 5V 5A LCD Power Supply Volt Reducer Transformer Module Board with USB Port Protective Case

DROK DC Buck Module, Adjustable Buck Converter Step Down Voltage Regulator 6V-32V 30V 24V 12V to 1.5-32V 5V 5A LCD Power Supply Volt Reducer Transformer Module Board with USB Port Protective Case

Product ID: 264052574

Details

Brand
DROK
Current rating
5 Amps
Mounting type
Rack Mount
Power source
DC Powered
Product dimensions
4D x 6.6W x

⚡6-32V input range

📊LCD voltage & current display

🔋5A max output current

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RM233

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Sold byAmazon MalaysiaDelivered 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 - Integrated USB output with on/off control for seamless device charging or powering
REAL TIME MONITORING - Large digital LCD shows voltage and current simultaneously for instant feedback
ROBUST POWER HANDLING - Supports up to 5A current and 75W max power with recommended 50W continuous use
SMART SAFETY PROTECTIONS - Built-in short-circuit, over-temperature, and reverse polarity safeguards
PRECISION VOLTAGE CONTROL - Continuously adjustable 1.5V-32V output for tailored power needs

The DROK DC Buck Module is a high-efficiency, adjustable step-down voltage regulator designed for professional DIYers and tech enthusiasts. It accepts a wide input voltage range (6-32V) and delivers a stable, customizable output voltage (1.5-32V) with up to 5A current capacity. Featuring a clear LCD display for real-time voltage and current monitoring, it includes comprehensive safety protections such as short-circuit, over-temperature, and reverse polarity safeguards. Its compact design with a protective case and USB port makes it ideal for powering, charging, or driving LED and solar projects with confidence and precision.

Specifications

ASIN	B07JZ2GQJF
Best Sellers Rank	#152,575 in Computers ( See Top 100 in Computers ) #1,629 in Computer Power Supplies
Brand Name	DROK
Country Of Origin	China
Current Rating	5 Amps
Customer Reviews	4.4 4.4 out of 5 stars (1,833)
Item Dimensions D x W x H	4D x 6.6W x 2.5H centimeters
Manufacturer	DROK
Maximum Frequency	180 KHz
Minimum Frequency	60 Hz
Model	180080AFA
Mounting Type	Rack Mount
Part Number	180080AFA
Power Source	DC Powered
Specification Met	CE, ETL
Unit Count	1 Count

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