Description Material Experimental Board Mixed AlloyColor BlackChip Module CP2102Working Temperature 40 ℃ 125 ℃Power Input 4 5V 9V 10VMAX USB poweredDrive Type Dual high power H bridge driverCurrent continuous transmission ≈70mA 200mA MAX Standby 200uASize L X W 4 8X2 5cm 1 89 X0 98 appr Features A great set of tools to develop ESP8266 ESP8266 has IO Pin ESP8266 full IO mouth leads directly download without resetting Open source interactive programmable low cost simple smart WI FI enabled Greatly speed up your IOT application developing process Documentation You can find the firmware source code and documentation on Github as well as nodemcu flasher a Windows only tools to flash the firmware to a module There s also a separate tool called esptool that will let you flash nodemcu from Linux If you find the documentation is all over the place you might want to checkout NodeMCU video tutorial below Nodemcu com is the official website for the project but you ll find more information on Github You can also get answers to your questions on their BBS or ESP8622 community forums Package included 1 x ESP8266 CP2102 Development Board