Fish Tank Aquarium Thermometer with Probe, 2.65" Large LCD and Alarm

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• Measure Water Temperature Directly – This digital fish tank thermometer uses a 4.9 ft detachable probe to read water temperature instead of only checking the glass surface. With ±1°F / ±1°C accuracy, 0.1°C resolution, and a 2-second refresh cycle, it helps you monitor daily aquarium temperature changes during water changes, heater checks, or seasonal room temperature shifts.
• Large LCD, Easy-to-Read Numbers – The 2.65 in LCD screen and 0.78 in tall digits make the temperature easy to read at a glance. Switch between °F and °C with one button, so the aquarium thermometer works naturally for US users who prefer Fahrenheit and for users who track Celsius.
• 3 Ways to Place It Around Your Tank – Use the magnetic back, tabletop stand, or hanging hook to position the display outside the tank while the probe stays in the water. The hook is recommended for thin tank rims under 7 mm; for thicker rims, use the stand or magnetic mounting option.
• High/Low Alarm + Max/Min Memory – Set upper and lower temperature limits for your fish, betta, turtle, or axolotl tank. When the reading goes beyond your setting, the screen flashes and the buzzer alerts you; MAX/MIN memory also lets you review temperature changes over time.
• Replaceable Battery and Calibration Function – Powered by a replaceable CR2032 battery, this aquarium temperature monitor is not a sealed disposable unit. The calibration setting helps adjust readings when needed, and the ABS display unit is designed to stay outside the tank; keep the LCD unit dry and away from long-term moisture.