I have a Digital Roasting Leave-In Thermometer for sale. It has been used once and is $7. The only reason I'm getting rid of it is I opted to upgrade to a 4 probe single unit. This unit has a single, removable probe and is designed to stay inside whatever you are baking or grilling while the oven door or grilling lid remains closed throughout the cook. It will monitor the internal temperature of whatever you are baking/grilling. You can set any temperature you want for the internal temperature and the unit will beep once it reaches that set temperature. You can also set a timer if you prefer to cook that way and always see what the current internal temperature is. This unit run on 2 AAA batteries (not included). The photo attached is of the actual units I have for sale. Cash only please, Thanks for looking