What is it?
It is an upgrade version of NodeMCU with my customized 4MB ESP07. This product include a 5DB FPC antenna. You can also add bigger antenna. If you want to reach the most effect of extra antenna you should remove the resistor beside ceramic antenna.
Why did you make it?
I retired NodeMCU-07 for a long time. Some customers keep asking this product so I decide to remake this product and bring back an upgrade version.