A digital electronic system used for receiving an audio alarm from a smoke detector, a carbon monoxide detector and like detectors. The system amplifies and converts the alarm to a digital encoded radio frequency signal for shutting off power to a kitchen appliance. The system includes a microphone and an amplifier connected to a comparator circuit. This circuit provides for outputting a logic 0 or logic 1 and outputs logic 1, in the form of the digital radio frequency signal, if an audio alarm is received. The comparator circuit is connected to a transmitter and encoder circuit, which receives the frequency signal and transmits it to a radio frequency receiver and decoder circuit. This circuit then decodes the signal and disconnects the power to the appliance.