La Crosse Technology WS-8115U-B Atomic Digital Wall Clock with Indoor and Outdoor Temperature, Black Monitors Indoor and wireless outdoor temperature (F/C) Atomic self set time and date (manual set option) Automatically updates for Daylight Saving Time (ON/OFF option) Time zone settings from GMT 0 to +/-12 Four language settings: English, French, Spanish, German Wall hanging or free standing Self setting time Available settings to any time zone Automatic DST reset Temperatures Calendar Different language modes Alarm with snooze Wireless sensor Indicator icons It&#039;s so important to be on time, so why not use the most accurate clock. Atomic time sets to your preset time zone selection Choose any time zone (GMT 0 from +/- 12hrs) and uses radio frequency to set your clock and keep time to NIST accurately and updated. Daylight saving time resets twice a year for you. Optional manual time set (if out of 2,000 mile radius from WWVB tower, located in Fort Collins, CO). Displays calendar weekday, month &amp; date Select from 4 languages (English, French, Spanish, or German) Temperatures can display in either Fahrenheit or Celsius Icons indicate: Active alarm, WWVB signal, PM, and low/weak battery Battery operation only (not included) Weather-resistant, not waterproof. Recommended sheltered from extreme weather, such as: constant precipitation, direct sunlight, but well ventilated. To Position your sensor: Mount sensor (outdoors) on a North-facing wall or well shaded area; under an eave or deck railing is preferred. Maximum transmitting range is over 200 ft (60 meter) in open air, without any obstructions, such as walls, windows, foliage, etc. Includes one TX38U-IT-N transmitting temperature sensor Kick-out leg stands to freely position on a table. Use mounting keyhole for wall placement. Includes digital clock, transmitting sensor and quick setup guide Requires 2 AA alkaline batteries (not included) to operate clock; and 2 AAA batteries (not included) to operate sensor.