This aquarium thermometer is made of PVC and has good corrosion resistance. At the same time, the product has super waterproof power and can be immersed for a long time in freshwater pools or water pools of sea. Temperature range: from -50 ° C to + 70 ° C. Accuracy of ± 1.0 ° C. The display resolution is 0.1 ° C. Among these the most suitable temperature for life with fish: 23 ° C to 28 ° C / 77 ° F to 86 ° F. The compact size takes up no place and can be easily moved. LCD provides easy-to-read readings and makes it easy to read temperatures. Digital LCD displays are in degrees Celsius. This waterproof aquarium thermometer can be fully immersed in the aquarium. Perfect for use in the aquarium. It can also be used in any other scene.