Modern communication technologies allow people to access and monitor anything from anywhere using networks like LoRaWAN that is often described as one of the Internet of Things (IoT). For this reason, in this project the LoRa technology will be used as a means of communication integrated with the Lopy4 commercial devices with the need to obtain data on the environment of a building to adjust theoretical models were created to predict the indoor behaviour of the building. This work is implemented by placing a device in a room for the collection, analysis and verification of data from the sensors and send them through LoRa to The Things Network platform. Then, this data is processed together with the forecast weather in a website designed in Angular. In addition, the energy harvesting mechanism will be applied and analysed using a solar panel. The goal of this fieldwork is to verify that the data obtained from the sensors are reliable and accurate. Then, analyse why these values are affected by factors such HVAC systems (Heating, Ventilating, Air Conditioned). In addition to the data collected, this research also tries to reduce the energy consumption of the device as well as analyse the consumption in the different phases to estimate the useful life or increase it by applying the energy harvesting mechanism. The results collected by the sensors are consistent with the reality and the manufacturer?s specifications. However, the mechanism of energy harvesting has not been favorable because the solar charger consumes a significant amount of energy when it is sunless.