Read food temps in 3 seconds or less! Thermocouple needle senses real-time temperature changes more precisely than low-cost thermistor units. The 4.5 inch probe reaches the center of large roasts and turkeys. On the BBQ, probe length keeps you and the electronics further from the heat. Popular with pastry chefs, it reaches into pots for boiling sugars and into the center of baked goods. Deep fryers safely measured where competing short probes would expose you to splattering oil. Each Super-Fast® Thermapen® comes with a NIST-Traceable certificate of calibration giving actual test data to prove its accuracy relative to National Temperature Standards. NSF listed. No buttons to confuse you or trap grime. Open the probe, Thermapen turns on. Close it, it turns off. Battery compartment settings personalize your unit. Disable the Auto-Off so the Thermapen is always ready when the probe is open. Change display from °F to °C. Select 1 degree or 0.1 degree. Use Trim-Adjust with an ice bath to calibrate for even better accuracy. Thermapen is the most highly recommended food thermometer in the world. Preferred by celebrity chefs, health inspectors, pro BBQ teams and restaurant chains. The Super-Fast speed and accuracy tell you more than any other thermometer about what's actually happening in food while it cooks. Hand made in a professional instrument factory in England, the Thermapen's measurement technology is faster and more accurate than mass-produced houseware thermometers. Splash-Proof industrial design with molded-in seals, high-temp plastics, and minimal food traps survives wet and messy commercial kitchens in demanding ops worldwide. Knock-offs don't use the same instrument technology, therefore don't perform the same or last as long. Comes with a guidebook explaining how to use a Super-Fast thermometer for accurate readings and better food. Includes a 2-year warranty backed by ThermoWorks Tech Support center and NIST-traceable calibration laboratory.