Patent ID: 8836522

Claim:
A safety shut-off system for controlling power supply, the shut-off system comprising: a power route for providing power from an electrical system to an appliance; an alarm sensor for detecting an alarm signal from a particular smoke alarm, the alarm signal including both a frequency component and a cadence component, the cadence component comprising a specified series of tones emitted in a specific pattern with pauses of specific lengths between each tone, and further sending an input to a micro-controller; a current sensor to determine whether current is being drawn by a load when the load is connected to the safety shut-off system; a switch mechanism for terminating power supply along the power route to the appliance; a synchronization module that allows users to synchronize the particular smoke alarm with the alarm sensor of the safety shut-off system, the synchronization including synchronizing the alarm sensor with both the frequency component and the cadence component of the smoke alarm's signal, such that only alarm signals from the particular smoke alarm will trigger a power supply termination; and the micro-controller disposed in communication with the alarm sensor, the current sensor, and the switch mechanism for determining that the frequency component and the cadence component of the alarm signal match the previously synchronized alarm signal from the particular smoke alarm and terminating power supply in response to the input from the alarm sensor while the load is drawing current above a predetermined threshold.