I will try this more and perhaps I can be more confident in its value. Pairs with a smart phone and gives grill temp and also core temp of meat being grilled. My  Weber grill has a temp gauge which seems to be close to measured temperature. The probe to core of meat seems very accurate to producing properly cooked meat. Still find I have to be close to grill to monitor the progress. Didn’t save me any time but seemed to complicate it.