Little Time Or Temp by Rainbow Lifegard. **** PRODUCT MANUAL **** Digital clock/thermometer with illuminating light. Accurate measurement of aquarium water or room temperature in F or C. Rainbow Lifegard / Pentair Aquatics Little Time & Temp Digital Clock and Temperature Indicator with backlit display and battery. Features digitally correct readings of aquarium water or room temperature. - Perfect for Aquariums, Reptiles or Greenhouses - Includes Illuminating backlit display - Safe for Salt or Freshwater Use - Attaches to any surface - 3` Cord with all plastic probe & suction cup - Battery included -- two year lifetime - Wide temperature range (-58 F to 158 F) - 1-Year Warranty.