1、USB TO SERIAL: Adopt series USB to serial port chip, which can replace CP2014 or PL2303 as a general USB to serial port module. 2、GOOD PERFORMANCE: Add ESP32 and ESP8266 automatic programming circuits, and add a 6P pin header to your circuit board to improve performance. 3、EASY OPERATION: The development module is easy to use, one key programming can be realized by connecting this module, with convenient debugging. 4、EASY TO INSTALL: The ESP8266 development board is compact, with standard interface, equipped with pin header, which is easy to install and use. 5、RESIN MATERIAL: Using excellent resin material, the serial port programming module has high toughness, environmental protection and good durability.