Fluker Labs - Digital Hygrometer & Thermometer. This unique multi-pack records two important factors in the care of your reptile or amphibian humidity level and temperature. The Thermo-Hygrometer has a digital display which simplifies reading the measured information. The simple, compact design fits easily into your environment causing less stress for the animal. This product comes equipped with max/min button that displays the maximum and minimum levels of temperature and humidity that your enclosure has experienced. This is a significant feature because it will monitor severe fluctuations in the tank. The owner will be able to restart the max/min history by pushing the clear button. This product also has a (C) Centigrade and (F) Fahrenheit temperature display choice and is proven to be more reliable than previous products offered in the pet trade.