NodeMcu ESP8266 V3 Lua CH340 Wifi Dev. Board is a fast leading edge low-cost WiFi technology. Modern high-level mature LUA based technology. It is an integrated unit with all available resources on board. It is super simple to complement your existing Arduino projects or any development board that has I/O pins available.
 
Specifications:-
Chipset: ESP8266
Language Support: Lua scripting
Connectivity: Wi-Fi
Compatibility: Various sensors and peripherals
 
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