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NodeMcu
NodeMcu
NodeMcu
NodeMcu
NodeMcu
NodeMcu
NodeMcu
NodeMcu
NodeMcu
NodeMcu

EMC-00003-A

(Last updated) Jun 20, 2026

NodeMcu

WiFi-enabled IoT development board

The ESP8266 NodeMCU CH340 board is a WiFi-enabled microcontroller based on the ESP8266 chip for IoT applications. It offers onboard processing, GPIO support, and built-in wireless connectivity. It is widely used in IoT projects, smart devices, automation systems, and wireless sensor applications.
Processor L106 32 bit
Processor speed 80MHz to 160MHz
Flash memory 4MB
Analog to digital 1 input with 1024 resolution
Maximum concurrent TCP connection 5
GPIOs 17
Transfer rate 110 Kbps to 460800 Kbps
Input voltage supply 4.5V to 9V
Communication interface voltage 3.3V
Current consumption 10uA-170mA