This paper describes the development and implementation of a prototype that monitors the availability of space in a sheltered parking lot, establishing quality of service (QoS) parameters. Consequently, radiofrequency modules were used to transmit the information acquired through a network of adapted sensors. The samples taken from the status (available, occupied) are displayed, as well as the data acquired and sent to a web server where they are stored and displayed in a mobile application and the end user can check the status of the parking space, as well as its parking fee, location and structure. Each sensor has an accuracy of 3 mm ranging between 3 cm and 4 m, while the radio frequency transmission has a power accuracy of 4 dB to insure adequate performance.