Fuente: WIPO "rice" An alarm system for the interior of a vehicle utilizing a temperature sensor measuring the interior temperature of the vehicle and producing a signal when a certain level of temperature is reached. A sound detector also produces a second signal representative of a certain sound intensity within the interior of the vehicle. An AND gate circuit receives the signals from the temperature sensor and the sound detector and generates an output signal. Alarm means is triggered by the output signal of the AND gate circuit.