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Four black LCD digital aquarium thermometers with suction cups and long cables

4-Pack LCD Digital Aquarium Thermometer with Suction Cup

SKU CH-997Q-75HTK

Four digital aquarium thermometers with probes on two-metre cables, LCD read-outs switchable between Celsius and Fahrenheit, and two suction cups each for tank mounting

  • Product colorBlack
  • Accurate readings within ±1 °C across a -50 to +70 °C range
  • Large LCD screen shows temperature clearly at a glance
  • Switch between Celsius and Fahrenheit with a long press on the power button
  • Two suction cups secure both probe cable and display unit to the tank
  • 74 inch cable lets the probe reach any corner of large aquariums

4-Pack LCD Aquarium Thermometers

This four-pack of digital thermometers suits aquarium keepers who need simultaneous monitoring across multiple tanks or zones. Each unit displays water temperature on a clear LCD screen for quick visual checks. The probes attach inside the tank while the display units remain outside, keeping electronics dry. Ideal for hobbyists managing several freshwater or marine setups.

Temperature Range -50 to +70 °C

The probes cover a wide span from -50 °C to +70 °C (-58 °F to +158 °F) with an accuracy of ±1 °C, so they handle tropical, temperate and cold-water environments comfortably. A 2 m (78.74 inch) cable lets the probe reach deep corners of large tanks without stretching. The display unit itself is not waterproof and must stay above the water line at all times.

Dual Suction Cups and Unit Toggle

Each thermometer includes two suction cups: one secures the probe cable to the tank wall, the other holds the display unit in a readable position. A long press on the power button switches between Celsius and Fahrenheit readouts, eliminating manual conversion. Holding the same button for three seconds powers the device off to conserve the battery when a tank is temporarily empty.

How it compares

Measured against everything we stock in Digital Thermometers & Hygrometers, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 60% of the 925 comparable items (median $23.99).

Specifications

Product
Product colorBlack

Questions about this item

Will the 2 m probe cable reach across my large tank alongside my existing heater?

The probe cable is 78.74 inch (2 m) long, which is longer than the standard 23.62 inch (60 cm) cable, allowing placement in large tanks while keeping the display unit outside the water.

How do I confirm the thermometer is reading correctly after I attach the suction cups?

The LCD display shows temperature in either Celsius or Fahrenheit; long-press the power button to switch units, and the reading updates continuously within the -50 to +70 °C range with ±1 °C accuracy.

Does the 4-pack include everything needed to mount all four units, or do I need extra suction cups?

Each thermometer comes with two suction cups — one for the probe cable and one for the display unit — so all four can be mounted without buying additional accessories.

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