Digital Infrared Thermometer. Measures in any spot...even on a pet's skin! Easy point and press action. Large, clear LCD display •Safe and easy way to check for proper temperatue. Maintain proper temperature throughout the reptile's habitat. Test basking spots, caves, even herps themselves for safe and healthy temperatures. LCD display measures both Fahrenheit or Celcius. Accurate (+/- 2.5°F) infrared technology runs on two 1.5V cell batteries and measures temperatures from -27°F to 230°F.