ESP-12E ESP8266 Serial Port Wi-Fi Wireless Module is a compact, powerful Wi-Fi-enabled microcontroller module based on the ESP8266EX chip. It is designed for use in IoT (Internet of Things) applications and can be used as a standalone microcontroller or a Wi-Fi add-on for another microcontroller (e.g., Arduino).
Chip:ESP8266EX (by Espressif Systems)
Wi-Fi:802.11 b/g/n (2.4 GHz)
Flash Memory:4MB (typical)
GPIO Pins:11 GPIOs (with PWM, I²C, SPI, UART capabilities)
ADC:1 analog input (0–1V)
Operating Voltage:3.3V (⚠️ Do not use 5V directly)
Interfaces:UART (serial), SPI, I²C, PWM
Antenna:Built-in PCB trace antenna
Form Factor:22mm x 16mm (approximate)