Abstract: The invention relates to a system which permits the monitoring of an enclosed space to be carried out for the purpose of determining assistance to all persons therein, wherein said system corresponds to the technical field of devices for monitoring activities and providing automatic assistance. In this way, the system according to the invention is characterised by being modular and same fits within the concept of a monitoring unit which permits the monitoring of different spaces and the housing of the number of devices necessary for the size of the space to be monitored.