UNO R3 ESP8266 Serial Board WiFi Expansion GPIO Board

Description

Description Fully compatible with Ard Uno, Mega, etc. using standard pin interface spacing. Using advanced 3.3V power chip Lead a WiFi module power/service interface to facilitate developers to expand power and maintenance. Onboard ESP8266-12 industrial grade stable serial WiFi module, using enhanced PCB antenna, the signal is better. Built-in 5V to 3.3V TTL level shifter to prevent high voltage Ard TTL level from causing damage to the WiFi module. The onboard ESP8266-12 industrial grade stable WiFi module has a metal shield and is highly resistant to interference. Lead out all the interfaces of the onboard ESP8266-12 industrial grade stable WiFi module at standard spacing. Size:53.4mm*68.6mm With a stackable design,other modules can be accumulated on top for easy use The on-board 4 LEDs display the status of the ESP8266,which are PWR,DFU,AP,STA,and the operating mode at a glance.