uses the ESP8266-12E to obtain data from the Internet: time of a city, weather data and forecast information for 3 days, scrolling on the OLED Display; the device can switch to display data from any city in the world - maybe your relatives or friends live there The device uses sensors , ,BH1750FVI to collect temperature, humidity, Atmosphetic Pressure and light data. reads data indoor via sensor every 5 seconds and uploads it to the Internet every 60 seconds.You can see real-time data charts from your phone or computer.Of course you can modify the code to implement different functions [ESP8266]:CP2102 chip inside,Micro-USB,4MB flash,full I/O port and wireless 802.11 supported IOT platform for compatible. [] Sensor: A digital signal output with a calibrated temperature and humidity combined sensor.The simple communication protocol greatly reduces the programming effort required []:high-precision, small size, ultra-low power 3A pressure sensor.Its performance excellence, the absolute accuracy of the lowest can reach 0.03hPa.Can directly through the I2C bus connected with a variety of microprocessors.Pressure range: 300 ~ 1100hPa. [BH1750FVI]:Digital Light intensity Sensor.Direct digital output, complex calculation is omitted, omitting calibration. [OLED Yellow Blue Display]:0.96 inch 128X64 Yellow&Blue OLED LCD Display with I2C IIC SPI Serial Material:Metal+ABS+pc colour:mixed colour Package Contents: 1 * ESP8266-12E 1 * 1 * 1 * BH1750FVI 1 * OLED display 1 * USB cable 2 * Breadboard 20 * Double line Only the above package content, other products are not included. Note: Light 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.