Buy PROCHECK Instant Ear Thermometer, Glowing Fever Indicator: Ear - Amazon.com ✓ FREE DELIVERY possible on eligible Power Source, Battery Powered.Please read all instructions carefully and thoroughly before using this product. 5.1 How does Braun ThermoScan work? The Braun Thermoscan® PRO 6000 Ear 1 second reading. Beeps when ready. Stores 20 measurements. No probe covers required. Fever alarm. Auto shut off preserves battery power. Switchable - reading Always take temperature readings in the same ear. 2. A soiled probe lens will result in inaccurate measurement. Be sure to check that the probe lens is clean