The aim of this project is to develop such a system that measures the temperature, humidity and energy parameters and upload them on the internet. To measure humidity, temperature and heat index, I used DHT11 sensor, I also used an additional DS18B20 sensor which also measures temperature. NodeMCU is used because it has built-in WiFi module that would be used to upload the data on the internet. For measure AC current and voltages I used a power meter with a current sensor. I also attached an LCD to display the values where the system is installed.