When it comes to food safety, chefs have trusted Taylor to bring them accurate and easy-to-use instruments since 1851. The Taylor 9877FDA waterproof digital pen thermometer features an FDA recommended 1.5mm diameter step-down probe tip. This unit is waterproof and dishwasher safe. The anti-microbial plastic storage case inhibits growth of bacterial odor and mold. Easily calibrated in the field, the Taylor 9877FDA waterproof digital pen thermometer has a temperature range of - 40 to 450 degrees Fahrenheit, a hold and minimum/maximum feature, and is NSF Listed. An on/off button with auto off feature conserves battery life.