I recently found a small article in Cook’s Illustrated suggesting 2 relatively unusual ways to use a digital timer/thermometer. Those two ways are paraphrased below.
How do you use your digital thermometer?
To bring a pot to a boil before bringing it down to a simmer, set the digital thermometer to sound at about 200 or 205 degrees. The signal will warn you in time to turn down the heat. Reset the thermometer to 180 degrees to make sure the pots gets to a perfect simmer.
To get the perfect water temperature for coffee, set the alarm on the digital thermometer to 200 or 205 degrees and insert the probe into the spout of the kettle.