Applications of NodeMCU :

• Power Input: 4.5V ~ 9V (10VMAX), USB-powered
• Transfer Rate: 110-460800bps
• Communication Interface: UART / GPIO
• Networking: Smart Link Smart Networking
• Temperature Range: -40°C ~ + 125°C
• Drive Type: Dual high-power H-bridge
• Flash Size: 4MByte
• Cost-Effective Connectivity: Lowest cost Wi-Fi module in the market
• Ease of Use: No need to download resetting