Perfect, thank you !
It cannot boost 2A and seller says 3A. My test 5V to 12V can hardley reach 0.5A but at a efficiency at 63,6% and 0.01A more it went down to 57%. But at 0,1A output the efficiency is 79,7% the best I ever got. But seller promished 94% efficiency. Another test boost from 12V to 18.5 at 1A give only 76% efficiency but datasheet from XL6009 says it can reach 92% efficiency at 2A. Bad product!