ITEM NAME:3 x for for for for for D1 Mini NodeMcu 4M bytes Lua WIFI Development Board Base Description: D1 mini WIFI board based on ESP-8266EX. 11 digital input / output pins, all pins have interrupt / pwm / I2C / one-wire supported (except D0) 1 analog input (3.3V max input) a Micro USB connection Comes with 3 pieces Specification: Material: PVC Size: approx. 42*27*10mm/1.65*1.06*0.39" Package Includes: 3 Pieces ESP8266 Wifi Development Board Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. SKU: DMO0013406663018360.D1 mini WIFI board based on ESP-8266EX. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Size: approx. 42 27 10mm/1.65 1.06 0.39". People always bought together with.