ITEM NAME:ESP8266 Serial Wifi Module IOT Circuit Board Transceiver Module Send Receive DFS Descriptio n Description: Power: Standard Use: Internet Of Things Application Area: Internet Of Things IoT Specifications: Material: Circuit Board Colour: Black Size: 58*30*13mm Package Included: 1*ESP8266 Serial Wifi Module Note: 1.Due To The Manual Measurement And Different Measurement Methods, Please Allow 2-3mm Deviation. 2.Please Be Reminded That Due To Lighting Effects And Monitor'S Brightness/Contrast Settings Etc, The Color Tone Of The Website'S Photo And The Actual Item Could Be Slightly Different. Whatever the ending's perfect or not, you can't disappear from my world ESP8266 Serial Wifi Module IOT Circuit Board Transceiver Module Send Receive.1 ESP8266 Serial Wifi Module. Application Area: Internet Of Things IoT. We'd like to settle any problem in a friendly manner. Material: Circuit Board. Colour: Black. We want to make sure you are happy with our item.