SunGrow Digital Betta Thermometer for Tropical Aquarium Fish Black Color Suction Cups and 1 Battery Included 1 pc

567+ bought in the past month

$2.99

About this item

Accurate Temperature Reading --- SunGrow Digital Thermometer can read in both Degree Celsius and Fahrenheit at the touch of a button. To turn on or off, just press and hold the PWR (Power button) for 3-5 seconds.
Targeted Reading --- Reader tip is designed to measure temperature in the tank and will not be affected by surrounding room temperatures.
Suitable For All Environment --- Use the SunGrow Digital Thermometer in your freshwater or saltwater aquarium or reptile habitat. It is compatible with all types of aquariums and vivariums. The thermometer has a range of -50 degree to +70 degree Celsius (-58 to 158 degree Fahrenheit).
Made To Last --- Made of durable plastic and clear, big LCD screen, lightweight and easy to read. The temperature reading is unobtrusive. Comes with suction cups and LR44, 1.5v battery is included, cable with 39" length and ready-to-go upon arrival.
Just Fix And It’s Ready! --- Attach an LCD screen reader on the outside of your tank with a suction cup. Place the Reader tip (Sensing Probe Cable Line) in the tank where you want the temperature read and attach that with a suction cup. Then just press the button on the screen anytime you need to take a reading.

$2.99

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Sold byLUFFY PETS COLLECTION

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Product details

Brand	SunGrow
Special Feature	High Accuracy
Color	Black
Age Range (Description)	All Life Stages
Included Components	Not available
Outer Material	Plastic
Display Type	LCD
Product Care Instructions	Wipe Clean
Unit Count	1.0 Count
Power Source	Battery Powered

Technical specifications

brand	SunGrow
special_feature	High Accuracy
color	Black
age_range_description	All Life Stages
included_components	Not available
outer_material	Plastic
display_type	LCD
product_care_instructions	Wipe Clean
unit_count	1.0 Count
power_source	Battery Powered
model_name	Not available
number_of_batteries	1 LR44 batteries required.
item_length	2 Inches
upper_temperature_rating	70 Degrees Celsius
response_time	3 Milliseconds
reusability	Reusable
style	1 Pack
indooroutdoor_usage	Indoor
upc	688977511974
manufacturer	Luffy Pets Collection
item_weight	0.704 ounces
item_model_number	ST-3
batteries	1 LR44 batteries required.
date_first_available	July 22, 2019
item_package_dimensions_l_x_w_x_h	5.08 x 5 x 0.63 inches
item_dimensions_lxwxh	0.01 x 0.01 x 0.01 inches
brand_name	SunGrow
target_audience_keyword	fish
warranty_description	Not available
number_of_items	1
is_discontinued_by_manufacturer	No
product_dimensions	0.01 x 0.01 x 0.01 inches; 0.71 ounces
best_sellers_rank	#34,599 in Pet Supplies ( See Top 100 in Pet Supplies ) #30 in Aquarium Thermometers

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Customer reviews

4.4997 ratings

Customers say

Customers find the thermometer works well, is easy to use, and is accurate within 0.

★★★★★

Seem to Work Well

Miss C—July 6, 2025✓ Verified purchase

These thermometers appear to read more or less correctly. They're at least enough for me to make sure I keep my tanks in the right temperature range. Both read close to what other thermometers do but not exactly, so I'm not sure they're completely accurate, but they're close enough for me. They are NOT backlit and they're pretty small, so don't expect to be able to read them from across the room. They seem to be decent quality, cheaply made but what I would expect for such a low price. Read more

★★★★★

Worked Well, but Didn't Last Long

ITZJustMom—September 21, 2025✓ Verified purchase

Worked well in my 5 gallon tank until it died. It didn't last long. Read more

★★★★★

Great gadget

Customer—October 14, 2023✓ Verified purchase

The thermometer is simple to use. Don't have to clamp it somewhere. I just have the end dangling down into the water. I don't have another thermometer that could verify accuracy, but I didn't need precision. I just needed to know if the tank was getting too hot. I have a 10 gallon aquarium that I use as quarantine for when I get new fish. Since the fish are to go into an outdoor fountain, the tank was outside. Didn't want to boil them to death! Once quarantine over, I now just use thermometer in the fountain. I hadn't had one before so now nice to have it. It is small enough to be out of the way. Easy enough to turn on and off. Read more

★★★★★

Have many of these

Mickey—April 13, 2023✓ Verified purchase

These inexpensive little digital thermometers are great, accurate and you can even put new batteries in them. Mine seems to last forever. This is a great deal, highly recommended. Read more

★★★★☆

Works greats but won’t turn off

Everyday mom—December 5, 2022✓ Verified purchase

I really like the display and easy to read aspect of it. Instructions suggest turning off to lengthen battery abilities. Unfortunately- after I turned item on, it will not turn back off. Otherwise- great! Read more

★★★☆☆

Not accurate

Sabrina—January 29, 2026✓ Verified purchase

One didn't work from day one. I just didn't bother returning them. But I don't recommend. Read more

★★★★★

Thermometer

Renita Hamlett—June 20, 2025✓ Verified purchase

Nice Digital Thermometer Read more

★★★★★

Easy to read.

DN—March 9, 2025✓ Verified purchase

It works well and is easy to read. Read more