Communication devices, namely, wireless sensor devices, namely, sensor devices for monitoring environmental parameters such as temperature, humidity, atmospheric pressure and for the presence of some types of gases; motion sensor devices for perimeter access control; liquid presence detectors; door and window opening detectors; sensor devices for energy measurement in homes, for water consumption, for pipe leakage detection, for monitoring liquid storage levels, and for tank and silo level control; sensor devices for monitoring in real time the acoustic levels of noise in the streets of a city, the levels of air quality, structural health of streets and bridges; electronic devices which detect the presence of occupants and control the lighting system accordingly; sensor devices to detect available parking spots; sensor devices to monitor environmental parameters namely, sensors for air and soil temperature and humidity, solar visible radiation, wind speed and direction, rainfall, atmospheric pressure; sensor devices to measure radiation levels; Electronic wireless sensor dataloggers; Electronic wired dataloggers; computer software for monitoring data control; Accessories namely, electrical cables, antennas, batteries and liquid crystal displays