ESP32-WROVER MCU Modules Espressif Systems ESP32-WROVER MCU Modules are powerful and generic Wi-Fi/BT/BLE MCU module that targets a wide variety of applications. These modules target applications ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming, and MP3 decoding. The ESP32-WROVER module uses a PCB antenna, while ESP32-WROVER-I uses an IPEX antenna. These modules feature 4MB external SPI flash, 4MB external PSRAM, and an additional SPI PSRAM of 32Mbits.