I bought this thinking it could be used as an oven thermometer (ie: confirming oven temp for accurate baking). It expressly states in the user guide (but not on Amazon or their website!) that it *cannot* be used for that purpose. I did it anyway just to see how far off my oven's thermostat was but I won't dare to it again. Otherwise, it's a pretty solid unit. Magnetic backing is nice, the cord is long and feels sturdy. Doesn't really eat much battery power. Still, it would be nice if it could be used as an ambient oven thermometer and if it had a higher upper limit.