With our core temperature sensors, you'll become a true barbecue master. On the EVOLVE, you can connect up to four sensors, allowing you to keep an eye on the core temperature of your grillables at all times. Two core temperature sensors are already included with the EVOLVE grill. Simply read the temperatures on the display or on your smartphone via the "Charbroil App Control"! To be used exclusively as a replacement or addition with the EVOLVE Gas and EVOLVE Electric Grill.