Description:It leads to a WiFi module power supply/service interface to facilitate developers to extend the power supply and maintenance.This is a development board for the ESP8266 module from Expressif SystemsIt is an excellent way to interface/develop for the popular ESP8266 modulesIt can be used with NodeMCU Lua or Micropython to run scriptsAT command firmware can be installed to control the device via serial commands, or it can be programmed with your own Sketch/firmware directly from the Arduino IDESpecifications:Material :MetalSpecifications:It leads to a WiFi module power supply/service interface to facilitate developers to extend the power supply and maintenance.This is a development board for the ESP8266 module from Expressif SystemsIt is an excellent way to interface/develop for the popular ESP8266 modulesIt can be used with NodeMCU Lua or Micropython to run scripts100% brand and high qualityPackage Included:1 x Piece Development BoardNotes:Due to the difference between different monitors, the pictures may not reflect the actual color of the item.Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement.Please leaving a message before you give the bad feedback,if the products have some problems.Thanks for your understandings.