One of the most straightforward and informative home weather stations you can buy, this AcuRite weather station (01121M) acts as an indoor/outdoor thermometer, an indoor/outdoor hygrometer, and a weather clock that automatically adjusts for daylight saving time! As mentioned, the included atomic clock provides split-second accuracy, so if you have a programmable alarm set on the display, you’ll always know exactly when the temperature or humidity has met or exceeded your customizable minimum or maximum value! The indoor weather station is AC-powered and can take three (3) AAA alkaline batteries (not included) for optional battery backup in case of a power outage. The wireless outdoor sensor requires two (2) AA batteries (not included, lithium recommended for optimal performance). This weather station weighs 1.47 lbs and comes with a one-year limited warranty.

AcuRite Home Weather Station with Vertical Color Display, Wireless Outdoor Thermometer for Indoor/Outdoor Temperature and Humidity (01121M) Check current outdoor and indoor temperature and humidity, barometric pressure, forecast information, and the time and date with just a glance Patented self-calibrating technology provides a personalized forecast 12 hours from your current conditions Better understand how recent temperature, humidity, and barometric pressure measurements have been changing by checking the trend arrows and compare daily outdoor temperature and humidity high and low records The backlit, auto-dimming-optional display is easy to read and shows the current date, month, and date Never worry about updating the clock for daylight saving time, as the atomic clock will automatically adjust itself Set up programmable alarms to be visually and audibly alerted if your temperature or humidity conditions meet or exceed a customized, set low or high value Indoor humidity level icon displays whether the indoor comfort level is Dry, OK, or Humid The indoor weather gauge updates indoor conditions every 60 seconds and can sit on a desk or table, or it can be mounted on a wall using the integrated keyhole hanger on back Wireless Temperature and Humidity Sensor Features: Measures temperature and humidity Has a strong, 433 MHz wireless signal range up to 330 feet (100 meters) Transmits data every 16 seconds Durable, all-weather construction that is perfect for outdoor use Easy installation includes an integrated hanger Measured Condition Ranges: Outdoor temperature range: -40 °F to 158 °F (-40 °C to 70 °C) Indoor temperature range: 32 °F to 122 °F (0 °C to 50 °C) Indoor/Outdoor humidity range: 1% to 99% Power: Display: 5V, 250mA adapter (3 AAA alkaline batteries optional for recommended battery backup) Outdoor device: 2 AA alkaline or lithium batteries (not included)