Clear temperature monitoring Our aquarium thermometers display the water temperature accurately. The high-precision thermochromic technology provides instant readings and helps you understand the feeding environment without complex measurements. Effortless, tool-free control Each thermometer includes a special adhesive backing for easy peeling and direct attachment to the outside of the aquarium or other containers. No extra installation tools are required. Round patch design Ideal accessory for aquariums, terrariums, and turtle enclosures. The round patch looks good and stays practical while letting you sense changes in ambient temperature. High sensitivity with color indicators A temperature-sensitive color bar helps you stay aware of the water temperature. The intuitive display shows the current temperature with easily recognizable color markings, enabling simple monitoring and averaging. Use scenarios - Home aquarium: monitor temperature during feeding and routine care to maintain stable conditions. - Turtle or reptile enclosures: keep track of environmental temperature on the outside of tanks where it matters. - Small quarantine tanks or portable containers: attach externally for quick, non-intrusive temperature checks.