With a 30:1 optics ratio, the measurement spot diameter at a distance of 1 meter is only 36 mm. This means that even smaller objects, such as yogurt cups, can be easily measured from a distance. A 2-point laser marking accurately displays the diameter of the measurement circle, which helps avoid measurement errors. With two measurements per second, the Testo 831 is fast enough to perform scans on pallets or refrigerated shelves in a short amount of time. The user can set an alarm threshold that is continuously monitored during measurement, providing acoustic and visual alerts in case of exceeding or falling below the limit. This allows for quick and easy identification of defective products. The large, clear display is illuminated, ensuring that values can be read perfectly even in poor ambient light, such as in storage rooms. The testo 106 core temperature measuring device with a penetration probe can also check the correct temperature of soft plastic goods at their core. Typical applications include temperature quick tests during goods receiving inspections, in freezers, in refrigerated shelves, or in production at butcher shops, bakeries, food manufacturers, or supermarkets.