NodeMcu ESP8266 development board
- Power input: 4.5V ~ 9V (10VMAX), USB-powered
 - Transfer rate: 110-460800bps
 - Support UART / GPIO data communication interface
 - Support Smart Link Smart Networking
 - Working temperature: -40°C ~ + 125°C
 - Drive Type: Dual high-power H-bridge
 - Don’t need to download resetting
 - A great set of tools to develop ESP8266
 - Flash size: 4MByte
 - Lowest cost WI-FI
 
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