1. Easy to Read: Quickly turn the device on/off with a single button press, view accurate temperature readings on the large, userfriendly display, and easily switch temperature units by pressing and holding the button for 3 seconds. 2. BatteryPowered: Save energy with the builtin button cell of our aquarium thermometer, which has low power consumption. Additionally, the LR44 battery can be easily replaced when needed to ensure continuous temperature monitoring. 3. Practical Use: Choose either the wired model with suction cups or the wireless version with an adhesive design to effortlessly attach the thermometer and sensor probe to the outside of your aquarium. 4. Unobstructed View: Our aquarium thermometer features a design that won't block your view or disturb your aquatic pets. Monitor your aquarium's temperature wirelessly and maintain a stress environment for your aquatic life.