The Swell Reptiles Digital Thermometer Hygrometer with Alarm protects your animals against rapid temperature or humidity changes. The thermometer hygrometer is designed for monitoring the conditions in your enclosure and alerting you to sudden, and potentially dangerous, changes. This thermo-hygrometer comes with a large LCD display, making it easy to take readings, a powerful sensor on a 160cm wire, that can access temperature to 0.1 degrees and humidity to 1 percent relative humidity, and an LR1130 button battery pre-installed. Both the sensor and display are compact and easy to install. This temperature and humidity monitor has been designed by our own reptile experts. The three-button LCD display is easy to set, so you won't be fiddling with settings for hours. Both the sensor and the display can be mounted using suction cups, for a quick installation. Also, the display can be set to give readings in Celsius or Fahrenheit for quick, clear readings. Time is very important when protecting, and potentially saving, your pet from harm if the temperature or humidity changes. If you're unaware of a change you might only be able to act when it is too late. This model has a built-in alarm that can be set to any temperature or humidity level. When the thermometer hygrometer detects the levels passing these thresholds it will sound an alarm, similar to a fire alarm, so you can adjust the conditions as needed.