This is a digital aquarium thermometer with alarm function. The number on the screen will keep flashing when the water temperature reaches 28°C or 18°C. Measurement error: ±1°C. This is a submersible digital aquarium thermometer, it must be completely submerged to give an accurate water temperature. NOTE: Please tighten the back cover before you put it in the water. It is an aquarium thermometer with suction cup, with which you can stick the thermometer to the inside the aquarium. NOTE: Please place it no deeper than 30cm underwater. This aquarium temperature thermometer is specially designed for tropical marine aquariums. The temperature detected after installation will not be accurate immediately. You need to wait about 12 hours to get an accurate result. This digital tropical fish thermometer with LCD display with alarm can also read air temperature, suitable for tank for reptiles and vivarium. Alarm function: the displayed number keeps flashing when the water temperature reaches
