Check the listing for details. NEW NodeMcu Lua ESP8266 CH340G ESP-12E Wireless WIFI Internet Development Board. Condition: New. Listed at 4.75 USD. Free USPS First Class Shipping. May receive as quickly as in 3 days! Featured Item Description - 100% Brand New - Uses CH340G instead of CP2102 - NodeMCU has built-in USB-TTL serial with super reliable industrial strength CH340G - CH340G provides superior stability on all supported platforms - Communication interface voltage: 3.3V - Antenna type: Built-in PCB antenna is available - Wireless 802.11 b/g/n standard - WiFi at 2.4GHz, support WPA / WPA2 security mode - Support STA/AP/STA + AP three operating modes - Built-in TCP/IP protocol stack to support multiple TCP Client connections (5 MAX) - D0 ~ D8, SD1 ~ SD3: used as GPIO, PWM, IIC, etc., port driver capability 15mA - AD0: 1 channel ADC - Power input: 4.5V ~ 9V (10VMAX), USB-powered - Current: continuous transmission: 70mA (200mA MAX), Standby: