ESP-32S ESP-WROOM-32 WiFi Bluetooth ESP-32S microcontroller with built-in ESP-WROOM-32 module. ESP32 can communicate via WiFi in the 2.4 GHz band and in Bluetooth v4.2 standard. - Inner mesh panties Supply voltage: 5 V Microcontroller Dual Core Tensilica LX6 240 MHz Maximum voltage on pins: 3.3V SRAM 520 KB memory Flash Memory: 4 MB Built-in WiFi 802.11 b/g/n Supports WEP, WPA/WPA2, PSK/Enterprise, AES/SHA2/Eliptical Curve Cryptography/RSA-4096 Built-in Bluetooth BLE module 30 GPIO pins including: 3x UART, 3x SPI, 2x I2C (2x I2S) 12 - channel ADC converter 2 - channel DAC converter PWM outputs Built-in USB-UART CP2102 converter allows programming of the module without the use of additional programmers Dimensions: 52mmx28.5mm Basic properties of the module: Built-in Wi-Fi module Built-in Bluetooth module Dual Core processor for data encryption All in one microcontroller