The new Sunmark Temple Thermometer accurately measures body heat using Patented R.A.T.E. technology (Rapid Accurate Temperature Establishment). Sensors rapidly track the heat flow generated from blood vessels to the skin s surface and converts measurement to body temperature. Great for home office and day care. Fast accurate 6 second reading can be taken while asleep or awake. Meets accuracy standards. Gentle non-invasive sensor accurately reads in degrees F and degrees C (no sterile covers required just wipe with alcohol). Power/memory control button. Large digital display. 2 AAA batteries included.