Large LCD Wireless Thermometer. Large LCD digits let you read the wireless outdoor temperature from across the room. Wireless outdoor temperature and indoor temperature in either Fahrenheit or Centigrade. Time display reads either 12- or 24-hour time. This unit can receive wireless temperature from up to 3 remote sensors: outdoor, garage, wine cellar. Comes with one wireless outdoor sensor. Receiver Power: 2 "AAA" alkaline batteries (not included) Sensor Power: 2 "AA" alkaline batteries (not included). Temperature Range: 14.2F to 139.8 F (-9.9C to 59.9C) (Indoor), -39.8F to 139.8F (-39.9C to 59.9C) (Outdoor TX29U-IT) Display: 6" H x 2.5" W x 1" D.La Crosse