The thermometer is a non-contact infrared thermometer, also with Probe themometer. You can select only one Mode at the same time but can change on Mode at will. Measuring the core temperature or the surface temperature of food. For measuring the surface temperature (e.g. food packaging) you are using the infrared sensor and with the immersion probe you are able to measure the core temperature. Technical Data: Measuring range -33°C...+220°C (Infrared) -55°C...+330°C (Imersion-thermocouple) Accuracy +-1°C or 1% Response time Appr. 500 ms Working temperature 0...50°C Storage temperature -20...50°C Emissivity adjustable 0.10...1.0 Distance: Spot size 3 : 1 Power supply 2 x AAA size Housing Plastic Dimensions 22 x 38 x 190 mm Weight 98g Features - C°/F°- switchable - MaxMin-memory - Automatic Hold - Lock-mode for continues measurements - IP65 waterproofed