BIOS Weather Indoor Outdoor Wireless Almanac Thermometer. Track Global Warming for yourself!The Wireless Almanac Thermometer is an instrument which provides users with instant access to temperature history. Five years of daily, maximum and minimum temperatures are held in memory. Users can compare today's temperature with any other date with these wholesale discount cheap bulk indoor outdoor thermometers. The thermometer continually updates the display with the Extreme high and Low with date recorded. Remote sensor transmits up to 150 feet. Displays the current date and time as well. 5 years of daily temperatures at the touch of a button!Displays the extreme High and Low temperature recorded to date. Indoor & Outdoor temperature. Min./Max. memory.