introduction to rn4020, rn4020 pinout,rn4020 working, rn4020 features, rn4020 applications, rn4020 Hello friends, I hope you all are doing great. In today’s tutorial, we are gonna have a look at detailed Introduction to RN4020. RN4020 is a completely licensed Bluetooth category 4.1 low energy consuming unit. This module is surfaced with the Bluetooth which is organized by Unpretentious ASCII inst ...