Our thermometer uses fast and accurate Type K Thermocouple Technology for an impressive 2-3 second response time. Featuring an automatic 99-minute count-up timer when the probe is shut, so you never have to wonder when you last checked the temperature of food. The LCD display can rotate 180 for left-hand viewing and reverses to white LCD for nighttime viewing. Choose between C and F readout and watch as it measures in a temperature range of -40F to 450F.