Specifications: Model: ESP8266 Color: black Material: PCB+ metal Module: ESP8266 module Interface: USB interface+OLED interface (1 PIN)+module interface (DHT1)+power supply/IO interface Indicator: power indicator x 1, status indicator x 1 Power supply voltage: 5V Size: 43 x 56mm Package Contents: 1 x ESP8266 development board 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 3. Based on ESP8266 NONOS-SDK programming, through the [IP/MQTT protocol stack, the 8266 is connected to the [Baidu Cloud/Alibaba Cloud/Tencent Cloud] Internet of Things platform to realize the data interaction of [device Internet of Things platform], [device device] and [Internet of Things] 2. Combined with OLED and modules, it can report the temperature to the cloud and display the messages sent by the cloud. features: 1. This module takes the ESP8266 module as the core, cooperates with the voltage stabilizing circuit, USB-TTL circuit, and serial port download path to realize the SDK development of the ESP8266 and realize the Internet of Things function. 4. SDK development of ESP8266 and programming of ESP8266 NONOS SDK 5. The equipment is connected to the Internet of Things platform, and the Internet of Things protocol MQTT/BAT Internet of Things platform.