The NEW Braun Thermoscan Pro 4000 Thermometer patented technology is an ergonomically designed ear thermometer engineered to take temperaturese easily and accurately with the click of a button. Exclusive ExacTemp technology provides an active user feedback light that signals that the probe has positioned in a stable way throughout the measurement, savoiding inaccurate measurements by handling errors. The preheated probe tip minimizes the cool down effect experienced when taking repeat temperatures, improving accuracy and repeatability. Includes an automatic probe cover eject button for quick and easy removal of used probe covers. There are built-in cross-contamination safeguards -- the probe cover sensor reminds operator to use a new probe cover.Thermoscan disposable probe covers help with protection of patient and user. They are designed for patient comfort, disposable covers help protect the unit, user and patient from potential cross-contamination.The Thermoscan Pro 4000 also features a wide range of patient temperatures -- 68-108 Degree patient range allows for rescue of intensive care. There is also a wide range of ambient temperatures -- 50-104 Degree ambient range allows for use in most environments. This model is durable and tested for damage resistance. 3-Year limited warranty coverage. The New Braun Thermoscan Pro 4000 Thermometer is Easy-to-Use and Extremely Accurate. Thermoscan Pro 4000, Preheated Probe And Sensor Technology For Reliable Readings, Soft, Easy To Read LCD Displays Temperatures In Either Fahrenheit Or Celsius, Probe Cover Ejection Button, Prominent Memory Button, Conveniently Recalls Last Reading, Ergonomic Design, 3 Year Limited Warranty. Improved Features: Exclusive Exact Temp Technology, Gives User Feedback Light (Green) Signals To Avoid Inaccurate Readings Due To Handling Errors. Preheated Probe Tip. Minimizes The Cool Down Effect When Taking Repeat Temperatures. Improving Accuracy. See SKU#411923 for probe covers..