Abstract: Examples provide a temperature-sensitive alert device that monitors temperatures associated with a heating device, such as an oven, stove, or cooktop. The alert device changes the status of the heating device from an off status to an on status if the temperature exceeds a threshold temperature. The alert device initiates an alert if the heating device remains turned on for a period of time which exceeds an expected amount of time. The alert can include an audible sound and/or a visual alert, such as a flashing light. A user can select a snooze function to turn off the alert for an alert delay time without disabling the alert device. When the delay time expires, the alert resumes. The alert device includes a dual component device enabling a first component monitoring a cooktop to synchronize with a second alert device monitoring another heating device, such as a detached oven or stove.