Easy to use tympanic thermometer measures core temperature instantly and beeps when complete. Convenient, economical probe covers make it the ideal instrument for use on all types of patients. Features: 1 second measurement, large illuminated display, F/C switchable display fever alarm at 99.5 °F (37.5°C) and last reading memory. Includes 1.55v (CR2032) lithium battery, 20 probe covers in convenient dispenser and desktop storage caddy. Latex-free; Manufacturer's 2-year warranty.