300W 20A DC-DC Buck Converter Step Down Module Constant Current LED Driver Power Step Down Voltage Module Electrolytic

Package arrived in good condition and as described. Thank you for your good service

Arrived in good condition and in time. Always thanks for you good service

ok

Package arrived in good condition and as described. Thank you for your good service

Arrived in good condition and in time. Always thanks for you good service

ok

After a few minutes of operation, it stopped working, and the other one stopped working after a few days as well. :(

It is defective, the Amperage cannot be adjusted. LM5116

I received the module about 2 months ago, I didn’t have time to check it! Today I connected it to a DC power source and the devices do not respond at all!

The efficiency is not very good. To get 12.5V at the output, you need to apply 18V to the input at a current of no more than 1A. If the output voltage drops more.

Everything works, radiators are isolated from transistors. Load 9.9A 14.2V. Left radiator 82°C, right radiator 53°C

Works, checked for a load of 10A 14V at the 22V input radiators are not isolated from transistors.

The voltage is regulated, but the current is not. Not happy with the product

Hello, everything is fine, it works. I recommend the seller! 👍

Made with high quality. I recommend.

Everything works. I recommend Prolavets.

Very nice and high quality product

Everything arrived and works