Abstract: A occupant detection and monitoring system has a sensor unit having a radio wave transmitter, a radio wave receiver, and a wireless transmitter configured to detect and receive vital signs of an occupant; a user interface having a microcontroller, a wireless receiver configured to receive the wireless signals transmitted from the sensor unit, a means for user input, and a network card; and a means for alerting occupants and third-parties to a triggering event; wherein the microcontroller, based upon logic, activates the alerting means at the triggering event. The sensor unit may be a camera that detects the presence of an individual and register their unique heart rhythm for identification purposes. This camera can be installed at the entry points of a home, behind the counter of a business near a cash register or at a bank or any other place that desires to use surveillance as a form of security. The sensor unit may be a light bulb that comprises the components of the sensor unit.

Abstract: The apparatus includes a condenser (4), through which passes a duct (3") that carries, downward, the fumes from heating boiler (1) to bring them into a lower chamber (5). The fumes are mixed with ambient air in this chamber (5), a mixture that is then moved upward, going through the evaporator (4) by the action of a fan (9), placed contiguous to the collection chamber (10), placed above the evaporator (4). Together with the recovery of heat from the fumes there is a recovery of the heat contained in the ambient air. Besides the high efficiency that can be obtained with a limited capital investment, in the case of fumes the apparatus purifies them of the solid particles in suspension and even noxious gaseous components. The apparatus is used independently of the hot gas, for example, to heat water for domestic use. The air that is exhausted by the fan (9) after having given up its heat inside the evaporator (4) can be used for conditioning a closed area.