What type of thermometer is required in all coolers, fridges, and display cases?

The type of thermometer required in all coolers, fridges, and display cases is an indicating thermometer. This type of thermometer is designed to provide a quick, visual indication of the temperature within the storage units, which is essential for ensuring that food is kept at safe temperatures to prevent spoilage and foodborne illnesses.

Indicating thermometers are often equipped with a dial or a display that clearly shows the current temperature. This visibility allows food service workers to easily monitor temperatures without the need for complex systems or a nuanced understanding of digital interfaces. The simplicity and directness of an indicating thermometer make it a valuable tool for maintaining food safety in various settings, including restaurants and grocery stores.

While other types of thermometers, such as digital, probe, or smart thermometers, can provide accurate temperature readings, they may not always be the best fit for the specific requirements of coolers and refrigerators, where ease of reading and direct indication of temperature is crucial for rapid monitoring. For example, digital thermometers can be precise but may require battery power, while probe thermometers are often used in cooking rather than for continuous monitoring in cold storage.