Once the manual control, this thermometer is useful to monitor a baking, sugar, cooking, etc. We must ensure that the tip of the probe is in the heart of the product! I make daily use in my restaurant and I could not do without me. The only complaint I could make is that the probe itself can not resist an intensive professional use ... (that said, I still used the thermometer for a year and a half every day before that it makes the soul - aijourd'hui I command so another)!