Mannix DTR900 Digital Recording Thermometer Single display shows outside & inside temperature simultaneously Displays time & date Memory records minimum & maximum temperatures Values are recorded with exact time & date stamp Waterproof exterior sensor cable is extremely thin for easy threading around & through windows F/C selectable Wall or desk mountable Ideal for refrigeration walk-in & reach-in boxes, household, lab and much more Specifications: Indoor temperature range: 14 to 176F (-10 to 80C) Outdoor temperature range: -40 to 176F (-40 to 80C) Accuracy: 1.8F (1C) Probe length: 6.5 feet (2 meters) Display Size: 2.45” x 1.57” Dimensions: 3-1/2” x 3-1/2” x 1” Power source: 1 "AAA" battery Supplied With: 1 "AAA" Battery