Taylor Precision Products Indoor/Outdoor Digital Thermometer with Barometer & Timer Indoor (32-122 degrees F/0-50 degrees C)/outdoor (-4-140 degrees F/-20-60 degrees C) temperatures Lower outdoor temperatures achievable with lithium batteries; barometric pressure chart Barometric pressure reading; weather forecast icons Calendar with clock and alarm; wireless remote sensor transmits up to 200 feet Base station and wireless remote require 2 AAA batteries each, not Included