ITEM NAME:ESP32 Development Board 2.4 GHz WLAN WiFi and Bluetooth 32 Chip for Arduino Description: ESP32 Development Board 2.4GHz Dual Mode WiFi + Bluetooth Development Board. This module is safe, reliable and scalable to a variety of applications. With 38 pins, and has more features than a 30 pins module. Supports LWIP protocol, Freertos Supports three modes: AP, STA and AP + STA. Specification: Size: approx. 57x28x20mm/2.24x1.10x0.79inch Package Includes: 1 Piece ESP32 Development Board.People always bought together with. Supports three modes: AP, STA and AP + STA. With 38 pins, and has more features than a 30 pins module.