Traffic Light Steak Thermometer
There are two downsides to this steak thermometer. The first one is that the battery is irreplaceable (fortunately the built-in battery can be used to cook up to 1000 steaks). The second one is that it can only be used for one steak at a time as you will need to stick it into a steak before it hits the grill, pan or oven and leave it there until the steak is cooked to your desired doneness.
The upside about it is that it makes it easy to read the doneness of the steak using similar signaling of a traffic light. When the green light blinks it means the steak is good to go (medium-rare), when the yellow light blinks it means it’s still good to go (medium) and when the red light blinks it means you gotta stop cooking it (medium well).