Built-in Wi-Fi (IEEE 802.11 b/g/n) for seamless IoT connectivity.
Reliable CH340 USB-to-UART for stable communication.
Multiple GPIO pins supporting UART, SPI, I2C, PWM, and ADC.
4 MB flash memory for code and data storage.
Compatible with Arduino IDE, Lua, and NodeMCU firmware.
Low power consumption with deep sleep mode (~10 µA).
Compact design (49 mm x 26 mm) with Reset and Flash buttons.
Stable 3.3V operation with onboard voltage regulator.