The fire-detection system is designed to detect the undesirable presence of fire as well as the environmental change associated with the burning of materials. In general, fire-detection systems are automatic, manual or both. Automatic systems can be used to inform the public of space evacuation in case of fire or other emergency situations. Furthermore, in many instances they have the ability to call emergency services, as well as prepare the infrastructure for other relevant systems in order to avoid the danger of fire spreading.