Digital Aquarium Thermometer – LCD Screen, High Precision Sensor
Digital Aquarium Thermometer – LCD Screen, High Precision Sensor
Digital Aquarium Thermometer with LCD Screen & High Precision Sensor
Keep your fish happy and healthy with this sleek mini digital aquarium thermometer. Featuring a touch-activated LCD screen and a high-precision sensor, it attaches effortlessly to the outside of your fish tank — no wires, no drilling, no fuss. At just 5.3 × 2.8 × 1.5 cm, it's compact enough for nano tanks yet accurate enough for serious aquarists.
Key Features
- 🌡️ High-Precision Accuracy: Measures water temperature from 0°C to 99.9°C (32°F – 210°F) with an accuracy of ±0.1°C, so you always know your tank is at the right temperature for your fish.
- 📡 Wireless & Wire-Free: No probe to submerge — the precision sensor is built into the back of the unit. Simply attach it to the outside of tanks up to 10 mm thick.
- 📺 Touch-Activated LCD Display: Tap the screen to light up the large, easy-to-read display. The backlight auto-turns off after 10 seconds to conserve battery life.
- 🔋 Long-Lasting Battery: Powered by an included CR2032 coin battery (replaceable). A low-battery "LB" indicator appears every 30 seconds when it's time for a swap.
- 🛡️ Durable ABS Construction: Impact-resistant ABS material in a stylish metallic blue finish adds durability and a modern look to any aquarium setup.
- 🔧 Easy Stick-On Installation: Peel, stick below the waterline on the outside of the tank, and wait just 5 minutes for an accurate reading. The reusable adhesive lets you reposition as needed.
Specifications
| Material | ABS Plastic |
| Color | Metallic Blue |
| Dimensions | 5.3 × 2.8 × 1.5 cm |
| Temperature Range | 0°C – 99.9°C / 32°F – 210°F |
| Measurement Accuracy | ±0.1°C |
| Battery | CR2032 × 1 (included, replaceable) |
| Max Tank Thickness | 10 mm |
How to Use
- Peel off the adhesive backing and firmly press the thermometer onto the outside of the fish tank, below the waterline.
- Allow 5 minutes for the sensor to stabilize and provide an accurate reading.
- Touch the screen to activate the backlit display; it will turn off automatically after 10 seconds.
- When "LB" appears on the screen every 30 seconds, replace the CR2032 battery promptly.
- If the display shows "E", the temperature is at or below 0°C. If "HE" appears, the temperature exceeds 99.9°C.
What's in the Box
- 1 × Digital Fish Tank Thermometer (battery included)
Made in Mainland China.
For guidance on optimal water temperatures for aquarium fish, visit the U.S. Geological Survey (USGS) for water quality resources, or explore fishkeeping best practices at EPA WaterSense.
Frequently Asked Questions
Q: Does this digital aquarium thermometer need to be placed inside the fish tank?
A: No — this is a wireless, external thermometer. Simply stick it to the outside of your aquarium glass below the waterline. The built-in high-precision sensor reads through tank walls up to 10 mm thick, so no probe ever enters the water.
Q: How accurate is this fish tank thermometer?
A: The sensor delivers a measurement accuracy of ±0.1°C across a range of 0°C to 99.9°C (32°F – 210°F), making it precise enough for both tropical freshwater and marine aquariums.
Q: How long does the battery last, and how do I replace it?
A: The included CR2032 coin battery typically lasts over one year under normal use. When battery life is low, the display will show "LB" every 30 seconds as a reminder. Open the battery compartment, swap in a new CR2032, and the thermometer is ready to go again — each replacement lasts approximately 2 months of active backlight use.
Q: Can I use this thermometer on a saltwater (marine) aquarium?
A: Yes! Because the thermometer attaches to the outside of the glass and never contacts the water, it works equally well for freshwater, brackish, and saltwater setups without any risk of corrosion or contamination.