Features *Time and temperature projection using a rotary lens and adjustable focus ring. *Atomic clock with 4 selectable time zones . *RF Wireless °F / °C thermometer links 1 remote sensor with auto-scroll and 100 ft. transmission (1 sensor included). *Max/Min temperature memory. *Perpetual calendar up to year 2048 with day of week. *Snooze alarm and LED backlight. *CE Mark Certified. *Batteries included. *Individually packaged. Specifications Time Format Hr : Min No. of Sensor Linked 1 Transmission Distance 100 ft. Main Unit Temperature Range :0 to 50 °C Main Unit Temperature Range: 32 to 122 °F Remote Sensor Temperature Range:-50 to 70 °C Remote Sensor Temperature Range:-58 to 158 °F Size 76.2 x 190.5 mm Size 3 x 7.5 inches Weight 340 gm Weight 0.75 lbs. No. of Battery 2 Battery Type AA - Main Unit AAA - Sensor Unit