ZOO MED CREATURES DUAL HYGROMETER & THERMOMETER The Zoo Med Creatures Dual Thermometer & Humidity Gauge is a versatile tool that allows you to accurately monitor the temperature and humidity levels in your invertebrate's habitat. Dual-function device features two easy-to-read gauges that can be affixed to the sides of your terrarium using the included Velcro backing. The thermometer measures temperatures from 10°C to 50°C (50°F to 122°F), while the humidity gauge measures humidity levels from 0% to 100%. The gauges are also glow-in-the-dark, so you can easily check the readings at night. The Zoo Med Creatures Dual Thermometer & Humidity Gauge is a must-have for any reptile or amphibian owner who wants to ensure the long-term health of their pet. The precise readings and easy-to-use design make it a great choice for both beginners and experienced keepers. Features: Glows-in-the-Dark! It is easy to set up and use. Unique hook and loop backing enables easy removal for the cleaning of your invertebrates enclosure. It is durable and long-lasting. Allows precise monitoring of both temperature and humidity in your invertebrate’s home. Temperature and humidity levels are extremely important for the long-term health of your invertebrates.