The RF Solutions has this module core processor ESP32-C3 is a Wi-Fi+ BLE combination of system-level chips (SoC), designed for various applications such as internet of things (IoT), mobile devices, wearable electronics, smart home, etc. ESP32-C3 with industry-leading low power and RF performance, supporting Wi-Fi IEEE802.11b/g/n agreements and BLE 5.0.ESP32-C3 chip is equipped with a RISC-V 32-bit single-core processor, operating frequency up to 160 MHz. The chip is support to have secondary development without using other microcontrollers or processors. The chip has a built-in 400 KB SRAM，384 KB ROM，8KB RTC SRAM. The chip also support external Flash while it built-in 4Mbit Flash. Support Wi-Fi 802.11b/g/n, 1T1R mode data rate up to 150Mbps.
Support BLE5.0, and rate support：125Kbps, 500Kbps, 1Mbps, 2Mbps.
32-bit RISC-V single-core processor, supports a clock frequency of up to 160 MHz, with 400 KB SRAM, 384 KB ROM, 8KB RTC SRAM
Support UART/PWM/GPIO/ADC/I2C/I2S interface, temperature sensor, pulse counter
SMD-18 package
Integrated Wi-Fi MAC/ BB/RF/PA/LNA/BLE
Support multiple sleep modes, deep sleep electric current is less than 5uA
UART rate up to 5Mbps
Support STA/AP/STA+AP mode and mix mode
Support Smart Config (APP)/AirKiss (WeChat) of Android and IOS One-click network configuration
Support UART port local upgrade and remote firmware upgrade (FOTA)
General AT commands can be better understand
Support secondary development, integrated Linux development environment
ESP-C3-13U module acquiesce in using the built-in 4MByte Flash, meanwhile support external Flash version