ESP32 WiFi Bluetooth Module 4MB Flash (XXSR69) ESP32-WROOM-32D

Chip: ESP32-D0WD-V3
Flash Memory: 4MB SPI Flash
Wireless Connectivity: Wi-Fi (802.11b/g/n) & Bluetooth (v4.2 BR/EDR and BLE)
Antenna: Onboard PCB antenna
Peripherals: UART, SPI, I2C, I2S, PWM, ADC, DAC, SD/MMC host controller, GPIO, Capacitive Touch Sensor, Hall Sensor
Operating Voltage: 2.7V - 3.6V
Operating Temperature: -40°C to +85°C
Package: SMD, castellated module for easy soldering