The aquarium water tester with a digital temperature display is ideal for maintaining the right environment for your aquatic pets. The LED screen provides accurate readings, ensuring the water temperature is always within the safe range. To use, simply place the thermometers in your tank and monitor the display. This device is ideal for both freshwater and saltwater tanks, making it a versatile tool for any aquarium owner. Features -Color:Black -Material:ABS -Size:4.40X4.40X1.00cm/1.73X1.73X0.39in -Bright led display: featuring a bright led display, this thermometers provides clear and easytoread temperature readings, ensuring you can monitor your fish tank with ease -Highly accurate: with an accuracy of ±0.9°f, this thermometers delivers precise temperature measurements, helping you maintain an optimal environment for your -Safe for water quality: this thermometers is designed to be nonintrusive and does not affect water quality, ensuring and healthy environment for your fish -Quick and easy setup: the thermometers is easy to install, allowing for quick setup and use, making it ideal for any aquarium enthusiast -Versatile functionality: ideal for various applications, this thermometers can be used in fish tanks, betta tanks, and other aquatic environments, providing reliable temperature monitoring Package list: 2 tank thermometer