The reader initializes the conversation. The RF industry is activated, and several lower level commands are exchanged to detect a appropriate card. 1x GND 3V3 (P2 with 2 pins two.54mm) connector can be used to electrical power externally the WCH CH569 MCU (it is usually recommended to remove the P4/SHUNT https://lloydv495ewn0.blogdanica.com/profile