The city of Huancavelica is located in the central part of Peru, situated on the eastern slope of the Andes Mountains, on the banks of the Ichu River, a tributary of the Mantaro River, the route of the Ichu River passes through two neighboring districts of Huancavelica and Ascension, During the rainy season, the river increases its flow due to the high rainfall that occurs in the area, causing it to overflow in some parts of the city, putting homes near the river in danger of collapsing. In view of this situation, the civil defense area of the Municipality has the need to have weather data permanently updated in real time, so it is proposed to design a wireless data transmission network, from the rainfall and level stations to the central station, through a radio link in the unlicensed 2.4Ghz frequency band.