The Taylor Wireless Weather Station with Barometer Reports indoor temperatures from 32 to 122 degrees farenheit. Remote sensor transmits temperature readings from -40 to 158 degrees farenheit back to base unit, as well as outdoor humidity readings. Reports indoor/outdoor humidity levels from 20 to 99% RH. Colorful bar display shows temperature and humidity. Barometer indicates rising or falling barometric pressue. Comfort level indicators rate indoor temperature and humidity conditions as Comfortable, Wet or Dry. Weather forecast icons indicate possible conditions for the next 12 hours: sunny, partly cloudy, cloudy, rainy, or stormy. Temperature trends indicators chart rising, falling or steady temperatures and humidity levels. Minimum/maximum temperature and humidity memory recall. 12/24 hour clock with alarm and snooze. Backlight feature for easy viewing. 100 ft transmission range. One remote sensor included; can work with up to 3 sensors (model 1513RMT, sold separately). Low battery indicator. Base unit operates on an AC adapter (included) or 3 AAA batteries (not included). Remote unit operates on 2 AAA batteries (not included).