The Adtemp 424 Tympanic IR Thermometer is an easy to use tympanic thermometer, which 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 using scan/peak technology Large 6mm illuminated display Multiple Use wide range 89.6 F 108 F /- .4 C 42.2 C /- .2 C C switchable display Fever alarm at 99.5 F 37.5 C Last reading memory Audible beep when measurement is complete Auto off conserves battery life Compact design 5 1/2” 13.97cm long, weighs 1.6oz. 45.3g including battery Powered by 1.55v CR2032 Lithium battery included Includes 20 probe covers in convenient dispenser Desktop storage caddy Meets ASTM E1965-98 standards for accuracy Specifications Type Tympanic Technology Peak-hold Scale Dual C Range F 89.6-108.0 Range C 32.0-42.2 Accuracy F 0.4 Accuracy C 0.2 Response Time 1 sec Beeper Yes Auto-off Yes Memory Last-reading Flex Probe No Needs Sheaths Yes Warranty 2 Year Battery Type CR2032 Battery Life 1000 uses Latex Content Latex-free Packaging Giftbox Dimensions 5.5”x1”x0.79” 141mm x 26mm x 20mm Weight 1.59oz 45g Display LCD Operating Environment 50 F 10 C Storage Environment 13 F 25 C 1 Each / Each