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JW Aquarium SmartTemp Thermometer

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3,065 ratings

$7.71 with 13 percent savings

Typical price: $8.84

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Size: One Size Fits All

Style: NON STANDING

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Brand	JW
Special Feature	None of the provided values
Color	White
Age Range (Description)	JW Pet Company Smarttemp Thermometer Aquarium Accessory
Included Components	JW Aquarium SmartTemp Thermometer
Outer Material	Magnetic-friendly material (e.g., plastic or rubber)
Specification Met	Emp
Display Type	Digital
Product Care Instructions	Wipe Clean
Unit Count	1 Count

About this item

We are proud to introduce the NEW SmartTemp Thermometer
This unique design combines a thermometer with a magnet
The Thermometer goes on the inside of the tank and the magnet goes on the outside to hold the SmartTemp firmly in place, no suction cups needed

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API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored

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PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic

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From the manufacturer

About US

JW pet products are intelligently designed to improve the lives of pets and pet parents. With JW, pet products go beyond the obvious and search for the newest innovation. Every product from JW is the result of hands-on product research and development.

Product information

Brand	JW
Special Feature	None of the provided values
Color	White
Age Range (Description)	JW Pet Company Smarttemp Thermometer Aquarium Accessory
Included Components	JW Aquarium SmartTemp Thermometer
Outer Material	Magnetic-friendly material (e.g., plastic or rubber)
Specification Met	Emp
Display Type	Digital
Product Care Instructions	Wipe Clean
Unit Count	1 Count
Power Source	Battery Powered
Model Name	JW Aquarium SmartTemp Thermometer
Item Length	7 Inches
Upper Temperature Rating	40 Degrees Celsius
Reusability	Reusable
Style	NON STANDING
Indoor/Outdoor Usage	Indoor
Inner Material	plastic
UPC	618940216001
Global Trade Identification Number	00618940216001
Manufacturer	JW Pet Company
Item Weight	1.12 ounces
Department	Unisex-Adult
ASIN	B002ZMFM4A
Country of Origin	China
Item model number	21600
Customer Reviews	3,065 ratings 4.3 out of 5 stars
Date First Available	December 3, 2009
Item Package Dimensions L x W x H	7.01 x 3.86 x 0.63 inches
Item Dimensions LxWxH	4 x 7 x 0.5 inches
Item Weight	0.07 Pounds
Brand Name	JW
Target Audience Keyword	fish
Size	One Size Fits All
Material	Plastic
Number of Items	1

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Product details

Is Discontinued By Manufacturer ‏ : ‎ No
Product Dimensions ‏ : ‎ 4 x 7 x 0.5 inches; 1.12 ounces
Item model number ‏ : ‎ 21600
Department ‏ : ‎ Unisex-Adult
Date First Available ‏ : ‎ December 3, 2009
Manufacturer ‏ : ‎ JW Pet Company
ASIN ‏ : ‎ B002ZMFM4A
Country of Origin ‏ : ‎ China

Best Sellers Rank: #13,897 in Pet Supplies (See Top 100 in Pet Supplies)
- #11 in Aquarium Thermometers

Customer Reviews:
3,065 ratings

Product Description

The unique design of the JW pet company smarttemp thermometer combines a thermometer with a magnet. The smart temp thermometer goes on the inside of the tank and the magnet goes on the outside to hold the smarttemp firmly in place, no suction cups needed. The smarttemp also offers a green safe zone which indicates the optimal temperature range. A high-end accuracy- (+/-) 1.5-degree f and the smartt emp has la rge easy to read numbers.

WARNING:

CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

Top Brand: JW

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WARNING: California’s Proposition 65

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	This Item JW Aquarium SmartTemp Thermometer	Recommendations Aquarium Thermometer Digital Waterproof Fish for Tank Temperature Sensor Suction Cup Easy Reading for Terrariums Aquarium Fish Tank Thermo-Meter Digital Heater Water for Top Gallon Aquariums	LABO Floating Aquarium Thermometer – Glass - Mercury Free – Safe for Freshwater and Saltwater Fish	PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic	JW Pet Company Smart Temp Standing Thermometer Aquarium Accessory	LCR Hallcrest LLC 43330972: Liquid Crystal Aquarium Thermometer Vertical
	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	-13% $7.71 Typical: $8.84	$6.12	$10.99	$11.99	$5.99	$5.87
Delivery	Get it as soon as Thursday, Apr 10	Get it Apr 15 - 22	Get it as soon as Thursday, Apr 10	Get it as soon as Thursday, Apr 10	Get it as soon as Thursday, Apr 10	Get it as soon as Thursday, Apr 10
Customer Ratings	4.33,065	4.27	4.132	4.53,774	4.33,065	4.52,117
Sold By	Kwik Retail	keaiduoa	LABO Techonology	LINGMENG STORE	EuriskoEnterprises	Neptune's Marketplace
power source	Battery Powered	Battery Powered	—	Battery Powered	Battery Powered	Battery Powered
upper temperature rate	40 degrees celsius	50 degrees celsius	40 degrees celsius	140 degrees fahrenheit	1.5 degrees fahrenheit	—
response time	—	—	500 milliseconds	5 seconds	500 milliseconds	500 milliseconds
specification met	Emp	—	—	—	High-end Accuracy (+/-) 1.5 F	FCC, CE

Customer reviews

3,065 global ratings

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Customers say

Customers find the thermometer works well for aquariums, with a white background that makes it easy to read, and appreciate its magnetic mounting system that holds it firmly in place. The temperature readability receives mixed feedback, with some saying it reads accurately while others report it reads 50 degrees when it should be room temperature. The sturdiness and value for money also get mixed reviews, with some reporting durability issues and considering it worthless, while others find it pretty good for the price.

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Functionality Readability Accuracy Magnet strength Ease of installation Temperature readability Sturdiness Value for money

209 customers mention "Functionality"196 positive13 negative

Customers find that the thermometer works well, particularly for aquariums, with one customer noting it performs better than suction cups.

"I love this thermostat have had it for nearly a year now and never lets me down, super accurate too" Read more

"I got this when it was super cheap but it's a very effective and nice looking thermometer...." Read more

"It looks nice and it still works." Read more

"...good product" Read more

150 customers mention "Readability"122 positive28 negative

Customers find the thermometer easy to read, particularly noting its white background and contrasting black numbers.

"Looks nice. Magnetic mounting is great add over old suction cup. Easy to read unlike some other versions. Good value." Read more

"...Reading temperatures is very easy, the visibility on the thermometer is very clear...." Read more

"...The "green" zone is easily read." Read more

"...It is accurate and super easy to read. I like the green coded safe zone. The red temp line is also easy to read from a wide angle...." Read more

127 customers mention "Accuracy"95 positive32 negative

Customers find the thermometer accurate, with some noting it is the most reliable tank thermometer, and one customer reporting a precise reading of 80.1 F.

"...have had it for nearly a year now and never lets me down, super accurate too" Read more

"...As for accuracy, I can say with confidence that the water temperature is displayed with minimal margin of error, if any, probably + or - .2 degrees...." Read more

"...It is accurate and super easy to read. I like the green coded safe zone. The red temp line is also easy to read from a wide angle...." Read more

"...Easy to read and clean. Cons: Very inaccurate. I am a breeder of fish and need specific temperatures for different species...." Read more

121 customers mention "Magnet strength"94 positive27 negative

Customers appreciate the thermometer's magnetic design, which holds it securely in place and works perfectly as a mounting system.

"Looks nice. Magnetic mounting is great add over old suction cup. Easy to read unlike some other versions. Good value." Read more

"...The magnet is usually good to grip it from the other side and I like being able to easily move it to clean around it without sticking my hand in...." Read more

"...Would recommend its use. Easy to read and magnet keeps it on the aquarium wall...." Read more

"...Things I don't like, the magnet isn't really strong enough to securely hold on thicker glass, and when my pleco knocks if off it sinks and the..." Read more

62 customers mention "Ease of installation"59 positive3 negative

Customers find the thermometer easy to install, describing it as simple to place and attach to their fish tanks, with the ability to reposition it as needed.

"This thermometer is very easy to place and is accurate in keeping the temperature." Read more

"...to put it or if you decide to re-scape your tank, this makes it very convenient ." Read more

"...Not this thermometer--it's MAGNETIC. It stays right where I placed it, no fuss, no muss...." Read more

"...I LIKE it a lot, simple, magnet concept is perfect, accurate enough and soooo easy to see...." Read more

206 customers mention "Temperature readability"129 positive77 negative

Customers have mixed experiences with the thermometer's temperature readings, with some finding it accurate and suitable for small fish tanks, while others report it reads room temperature as 50 degrees and doesn't show much change.

"Still the tried and true mercury thermometer...." Read more

"...Nowadays is hard to find good aquarium thermometers, they are either inaccurate or brake easily, this one however, even though is made in China,..." Read more

"This thermometer is very easy to place and is accurate in keeping the temperature." Read more

"...: Easy to read, clear with nice safe zone for clearly determining the temperature...." Read more

183 customers mention "Sturdiness"78 positive105 negative

Customers have mixed experiences with the thermometer's sturdiness: while some report it sits firmly on the glass and stays in place, others mention issues with broken glass and extremely poor durability.

"...It can fall off pretty easy if you bump it though...." Read more

"...serve as an anchor, the fins have weight and are shaped to help the thermometer stay in place, but be sure to gently push the fins into the sand or..." Read more

"...I decided to take a chance & ordered again. It arrived broken! Thankfully Amazon refunded my money. Amazon packaged this item VERY WELL!..." Read more

"...This little fella is magnetic it stays where you put it, clear and easy to read." Read more

127 customers mention "Value for money"61 positive66 negative

Customers have mixed opinions about the thermometer's value for money, with some finding it pretty good for the price and worth it, while others consider it worthless and non-functional.

"I got this when it was super cheap but it's a very effective and nice looking thermometer...." Read more

"...Easy to read unlike some other versions. Good value." Read more

"...broke and so the bulb was lose in the packaging and therefore the produce useless. make sure you insist on good packaging. Would recommend its use...." Read more

"...I'm thrilled that the thermometer that actually works was so inexpensive!" Read more

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Ron Sieloff
Works great, easy to read.
Reviewed in the United States on March 1, 2025
Size: One Size Fits AllStyle: NON STANDINGVerified Purchase

Looks nice. Magnetic mounting is great add over old suction cup. Easy to read unlike some other versions. Good value.

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Chelsea
Accurate
Reviewed in the United States on March 12, 2025
Size: One Size Fits AllStyle: NON STANDINGVerified Purchase
I love this thermostat have had it for nearly a year now and never lets me down, super accurate too

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Freakonforfatty
Accurate and It Stays Put Even With Strong Currents.
Reviewed in the United States on February 8, 2012
Size: One SizeStyle: STANDINGVerified Purchase
I received this thermometer today and placed in my aquarium right away to test if it does in fact stay down as the description says, you'll be glad to know that it does stay down.
The fins you see at the bottom serve as an anchor, the fins have weight and are shaped to help the thermometer stay in place, but be sure to gently push the fins into the sand or gravel.
I have a wave maker in my tank that creates currents from two different directions every 2.5 minutes, the thermometer did not move once and hasn't since I placed it in the gravel.
The thermometer has both readings in Celsius and Fahrenheit on a white background with a "green safe zone" area in the middle. Reading temperatures is very easy, the visibility on the thermometer is very clear.
As for accuracy, I can say with confidence that the water temperature is displayed with minimal margin of error, if any, probably + or - .2 degrees. I have a digital thermometer with a probe and both displayed the same temperature.
The overall construction of the thermometer is of very good quality and materials, the housing is made of glass and the fins of plastic, not sure what they used to give weight to the fins, but it works, it does sink and stays sunken.
Nowadays is hard to find good aquarium thermometers, they are either inaccurate or brake easily, this one however, even though is made in China, seems to be well built and I expect it to last. Hope this helps.

Read more

Freakonforfatty

Accurate and It Stays Put Even With Strong Currents.

Reviewed in the United States on February 8, 2012
I received this thermometer today and placed in my aquarium right away to test if it does in fact stay down as the description says, you'll be glad to know that it does stay down.
The fins you see at the bottom serve as an anchor, the fins have weight and are shaped to help the thermometer stay in place, but be sure to gently push the fins into the sand or gravel.
I have a wave maker in my tank that creates currents from two different directions every 2.5 minutes, the thermometer did not move once and hasn't since I placed it in the gravel.
The thermometer has both readings in Celsius and Fahrenheit on a white background with a "green safe zone" area in the middle. Reading temperatures is very easy, the visibility on the thermometer is very clear.
As for accuracy, I can say with confidence that the water temperature is displayed with minimal margin of error, if any, probably + or - .2 degrees. I have a digital thermometer with a probe and both displayed the same temperature.
The overall construction of the thermometer is of very good quality and materials, the housing is made of glass and the fins of plastic, not sure what they used to give weight to the fins, but it works, it does sink and stays sunken.
Nowadays is hard to find good aquarium thermometers, they are either inaccurate or brake easily, this one however, even though is made in China, seems to be well built and I expect it to last. Hope this helps.

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27 people found this helpful

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tallahasseelass
Mercury thermometer tried and true
Reviewed in the United States on March 10, 2025
Size: One Size Fits AllStyle: NON STANDINGVerified Purchase
Still the tried and true mercury thermometer. I like how easily you can clean it, and it does seem to collect algae inside the plastic holder, and I do wish this,came in a larger font. The "green" zone is easily read.

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LK
Effective thermometer for a good price. (at least when I bought it)
Reviewed in the United States on January 28, 2020
Size: One Size Fits AllStyle: NON STANDINGVerified Purchase
I got this when it was super cheap but it's a very effective and nice looking thermometer. I find trouble sometimes quickly reading the temp, but that just might be a me problem. The magnet is usually good to grip it from the other side and I like being able to easily move it to clean around it without sticking my hand in. It can fall off pretty easy if you bump it though. I'd say it's definitely worth what I paid for it but saw it up around 10 dollars, which is fairly overpriced.

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b. price
Great thermometer when you can get one that isn’t broken
Reviewed in the United States on January 28, 2025
Size: One Size Fits AllStyle: NON STANDINGVerified Purchase
I previously ordered one of these thermometers. I was thrilled with the first one and really like the quality. This manufacturer has a great reputation. I ordered a 2nd thermometer & read about many people receiving broken thermometers. I decided to take a chance & ordered again. It arrived broken! Thankfully Amazon refunded my money. Amazon packaged this item VERY WELL! The fact I received a broken thermometer is 100% on the seller. They must be providing broken ones to Amazon to ship. Beware!!

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b. price

Great thermometer when you can get one that isn’t broken

Reviewed in the United States on January 28, 2025
I previously ordered one of these thermometers. I was thrilled with the first one and really like the quality. This manufacturer has a great reputation. I ordered a 2nd thermometer & read about many people receiving broken thermometers. I decided to take a chance & ordered again. It arrived broken! Thankfully Amazon refunded my money. Amazon packaged this item VERY WELL! The fact I received a broken thermometer is 100% on the seller. They must be providing broken ones to Amazon to ship. Beware!!

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Janis C Halls
It is still working
Reviewed in the United States on December 24, 2024
Size: One Size Fits AllStyle: NON STANDINGVerified Purchase
It looks nice and it still works.

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Dianne J. Stein
Nice thermometer
Reviewed in the United States on November 30, 2024
Size: One Size Fits AllStyle: NON STANDINGVerified Purchase
This thermometer is very easy to place and is accurate in keeping the temperature.

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B. A. Harrison
My first trouble-free aquarium thermomenter
Reviewed in Australia on December 21, 2024
Size: One Size Fits AllStyle: NON STANDINGVerified Purchase

Previous aquarium thermometers of mine used suction cups or adhered to the side of the tank. None of them lasted long. The LCD color change ones would become useless after a year or so, and the suction-cup ones keep falling off as the UV lamps weakened the rubber/plastic. The electronic one was good until I dropped the receiver unit in the water.
This item is set & forget. The magnet works consistently to fix the thermometer to the tank wall, even when my turtle blunders into it (as he does often), and the scale is easy to read even for my old eyes & has the comfort zone clearly marked. Peace at last!

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Ruth
Exactly what I ordered
Reviewed in Canada on January 16, 2025
Size: One Size Fits AllStyle: NON STANDINGVerified Purchase
Good simple thermometer 👍

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Utz Garces V.
Excelente artículo
Reviewed in Mexico on September 10, 2020
Size: One Size Fits AllStyle: NON STANDINGVerified Purchase
El iman es potente y sirve perfecto. Me gustó que tiene una zona verde para indicar la temperatura segura del acuario.

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Utz Garces V.

Excelente artículo

Reviewed in Mexico on September 10, 2020
El iman es potente y sirve perfecto. Me gustó que tiene una zona verde para indicar la temperatura segura del acuario.

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Antonio
Ci voleva proprio!!!!
Reviewed in Italy on April 9, 2020
Size: One Size Fits AllStyle: NON STANDINGVerified Purchase
Ci voleva proprio un termometro così! È di grandi dimensioni, di facile lettura e pulizia e, soprattutto, si regge grazie ad una calamita. Cercavo da molto un articolo così che restasse finalmente fermo nell'acquario con un semplice attacco magnetico al posto delle classiche ventose che dopo un po' non hanno più presa. I tempi di consegna sono un po' lunghi, ma aspettare ne è valsa la pena.

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sushil
Excellent
Reviewed in India on June 19, 2021
Size: One Size Fits AllStyle: NON STANDINGVerified Purchase
Good design, durable and easy to read.

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JW Aquarium SmartTemp Thermometer

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I love that it has Magnet!

Top reviews from the United States

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Accurate and It Stays Put Even With Strong Currents.

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Great thermometer when you can get one that isn’t broken

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Top reviews from other countries

5.0 out of 5 stars My first trouble-free aquarium thermomenter

5.0 out of 5 stars Exactly what I ordered

5.0 out of 5 stars Excelente artículo

Excelente artículo

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5.0 out of 5 stars Ci voleva proprio!!!!

5.0 out of 5 stars Excellent

My first trouble-free aquarium thermomenter

Exactly what I ordered

Excelente artículo

Ci voleva proprio!!!!

Excellent