La Crosse Technology (C83349) Wireless Atomic Digital Color Weather Forecast Station with Alerts, 8.34L x 1.03W x 5.48H Inches - Black Remote Sensor mold risk (0, LOW, MED, HI); Remote temperature, indoors or out (F / C) 12/24 hr. atomic time and date (manual setting); Signal strength icon for sensor transmission Outdoor temperature trend indicator and alerts as (low / high); Outdoor humidity (%RH) with trend indicator Animated forecast icons: Sunny, Partly Sunny, Cloudy, Rainy, Stormy & Snowy; Forecast tendency indicator Weather Station mold risk (0, LOW, MED, HI); Min. and max. in / out temperature Perpetual calendar (day / month / date); Atomic reception indicator Indoor temperature in (F / C); Indoor temperature alerts (low / high) & Indoor humidity (%RH) with trend indicator Back light control (high / low / off); Outdoor heat index and dew point Indoor comfort level; Station and sensor low battery icon; Snooze / alarm icon Power Requirements: Display: AC power adaptor included; Optional 3 (AAA) Alkaline batteries backup (not included); Sensor: 2 (AA) Alkaline batteries Dimensions: Display: 8.34L x 1.03 W x 5.48H Inches & Sensor: 1.57 L x 0.79 W x 5.12H Inches