Coralife Battery Operated Digital Thermometer

Temperature ranges from -10 to +140 degrees Fahrenheit. Mounting suction cups and battery included. 39 inch long temperature probe cord. Reads in Celsius as well. (-23 to +60 degrees Celsius). - See more at: http://www.bigalspets.com/battery-operated-digital-thermometer.html#sthash.OdCYW6vi.dpuf