Product Type: WiFi Development Board / IoT Controller
Core Module: ESP8266 SoC (Integrated WiFi MCU)
WiFi Standard: IEEE 802.11 b/g/n, 2.4 GHz
USB Interface: CH340 USB-to-Serial Converter
Programming Interface: Micro-USB
Programming Languages: Lua (NodeMCU firmware), Arduino (C/C++)
Operating Voltage: 3.3 V (onboard regulation from USB 5 V)
Flash Memory: Typically 4 MB (32 Mbit)
Clock Speed: 80 MHz (up to 160 MHz)
GPIO Pins: Digital I/O, PWM, I²C, SPI, UART, ADC
ADC Resolution: 10-bit (0–1 V input range)
Onboard Components: Reset & Flash buttons, voltage regulator, status LEDs
Compatibility: Arduino IDE, NodeMCU firmware, ESP8266 SDK
Applications:
IoT and smart home systems
WiFi-enabled sensors and controllers
Remote monitoring and automation projects
Educational and prototyping platforms
Form Factor: NodeMCU V3 (breadboard-friendly layout)
Power Supply Options: USB or external 5 V / Vin pin
Operating Temperature: Typically –40 °C to +85 °C (ESP8266 chip rating)