I got all this product within 10 days of ordering to Mumbai, India. Thanks a lot gearbest for such a fast service. I will highly recommend this website for everyone.

Now come to the product, this is really made up of high quality materials. The converter automatically step up and down the input voltage to keep output voltage stable and constant.

I will highly recommend this product for everyone for daily use. I am attaching some pictures and videos of this product.Hope it helps, Recommended Product

Oct 01,2018

Ce convertisseur automatique est parfait pour réaliser une alimentation à base de panneaux solaires.

Arrivé rapidement.

This automatic converter is perfect for a power supply where the electricity is supplied by solar panels.

Arrived quickly.

Jun 20,2019

-great for solar panels - now I can charge my phone by the sun
-stable
-good calibration
-easy to set voltage

Suggestion

-none

May 09,2016

Very interesting electronic component for small electronic projects where the input and output voltages are variable. Very well packaged.

Nov 19,2018