Very precise temperature measurement: The aquarium thermometer is equipped with a precise and sensitive nickel-plated copper temperature sensing probe with a measuring range of 0C to 60C. It can accurately detect any 0.1C change, and the temperature measurement deviation is only 1C. Updated every 5 seconds, it allows you to monitor the temperature of your aquarium in real time. Wireless touch design: Our aquarium thermometer displays the aquarium water temperature without requiring a wired connection. With the touch button design, you just need to manually press the button on the screen and it will light up and show the current temperature. After 5 seconds, the led aquarium thermometer automatically turns off the screen and enters power saving mode. Just touch it again when needed. HD Display: HD LED display with blue letters, the temperature is clearly visible. You can easily read the aquarium water temperature data during the day or night. The miniature thermometer does not block the view of the aquarium and you can observe the living conditions of your aquarium fish at any time. Long service life: The self-adhesive aquarium thermometer is equipped with a low-power consumption 3V lithium-manganese battery that automatically goes to sleep after use. Economical and durable, its lifespan can reach 24 months, ensuring reliable temperature control. Wide range of applications: With a wide range of temperature measurements, the digital aquarium thermometer can be used to monitor the temperature of different types of water, such as fresh water, tap water, salt water, salt water. sea, etc. Just peel off the PVC adhesive on the back and stick it below the water level on the outside of the aquarium. Note: This product is not waterproof and should not be used in water. Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be color differences, please refer to the actual item received.