Digital Aquarium Thermometer with Probe — Suction Cup

Keep an eye on your water temperature without opening the tank. This digital thermometer (model ST-3) reads the water with a probe held in place by a suction cup, and shows the temperature on an easy-to-read LCD screen.

It displays in Fahrenheit (°F) or Celsius (°C) — switch between units to whichever you prefer. Its stated accuracy is ±1°C (about ±2°F), so treat it as an everyday monitoring guide and cross-check it against a second thermometer if you need an exact reading.

• Model: ST-3 digital aquarium thermometer with probe and suction cup
• Display: Fahrenheit (°F) or Celsius (°C), switchable
• Accuracy: ±1°C (supplier specification)
• Power: button battery, 1.5V — battery included
• Colors: Black, Yellow, or White

No mains power and no plug — nothing electrical goes in the water except the probe.