Accurate temperature monitoring - Digital aquarium with an external temperature sensor shows water temperature from 45 to 80 C with an accuracy of +/- 1 percent. - Display is on a transparent screen and supports switching between Celsius and Fahrenheit for easy reading. Automatic light sensing and display - The unit uses a sensitive zinc plate as a light sensor to detect ambient light, including sunlight and artificial lighting. - The screen automatically lights up when the aquarium is exposed to light, ensuring visibility without manual adjustment. Easy installation - Attach the unit to the outside of the aquarium glass with the included sticker. - Please install the digital aquarium below the water level to ensure proper operation. Broad compatibility and practical use - Suitable for most aquariums and compatible with home and office environments. - Works with fish tanks without being constrained by the power cable length, allowing flexible placement for monitoring water temperature. Usage scenarios - Home tropical aquarium: monitor water temperature precisely to keep tropical fish comfortable and healthy. - Office desk tank: maintain stable conditions in a compact setup while enjoying a clear, auto-illuminating display. - Public or classroom aquarium: provide visitors or students with easy access to real-time water temperature readings without manual checks.