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ThermoPro Waterproof Wireless Indoor Outdoor Thermometer for Swimming Pool, Upgraded IPX8 Water Temperature Monitor Floating for Hot Tub, Cold Plunge, Ice Bath, Pond

  • Based on 2,030 reviews
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon

Arrives Apr 21 – May 27
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Features

  • High Acurracy: This floating pool thermometer features highly precise sensor, accurate to 0.9F(.0.5C) in the temperature range of 32F to 140F. Sensor temperature range: -40F-158F, suitable for ice bath tubs, cold plunge, babybath, hot springs and aquarium
  • 500FT Long Range: With RF technology for more stable connectivity, this pool temperature thermometer allows you to monitor the pool temperature outdoors from your house up to 500FT, checking the pool temp without going outside!
  • Large Backlit Display: Pool thermometer wireless with temperature and humidity monitor features large digits and backlight to ensure easy reading even in dim light conditions; All time/24 hours max and min record helps you track temperatures throughout the day!
  • More Durable Sensor: Floating thermometer for pool is designed with lPX8waterproof and high-quality ABS materials, ensuring it can withstandexposure to pool water and various weather conditions for long time! Ensure mental parts are properly aligned and press them together firmly to ensure waterproof performance (Antenna, signal light and rope hole will be aligned.)
  • Easy to Use: The pool temp floater and receiver are automatically paired, making it go straight out of the box for use, no more tedious setup! Powered by 3A batterys (included)
  • New Version: Upgrade a "Mode" button to toggle between pool and hot tub settings, ensuring precise comfort indicator for your family to enjoy the water play safely and comfortably

Brand: ThermoPro


Special Feature: Waterproof


Color: Blue


Age Range (Description): Adult


Included Components: 1 x Receiver, 1 x Transmitter, 1 x Rope, 4 x AAA Batteries, User Manual


Outer Material: Plastic


Specification Met: FCC


Display Type: Digital


Connectivity Technology: RF Technology


Product Care Instructions: Hand Wash Only


Brand: ThermoPro


Special Feature: Waterproof


Color: Blue


Age Range (Description): Adult


Included Components: 1 x Receiver, 1 x Transmitter, 1 x Rope, 4 x AAA Batteries, User Manual


Outer Material: Plastic


Specification Met: FCC


Display Type: Digital


Connectivity Technology: RF Technology


Product Care Instructions: Hand Wash Only


Unit Count: 1.0 Count


Power Source: Battery Powered


Model Name: outdoor thermometer


Number of Batteries: 4 AAA batteries required. (included)


Item Length: 7.9 Inches


Upper Temperature Rating: 158 Degrees Fahrenheit


Response Time: 50 seconds


Reusability: Reusable


Immersion Depth: 7.9 Inches


Lower Temperature Rating: 32 Degrees Fahrenheit


Style: Pool Thermometer


Indoor/Outdoor Usage: Outdoor


Manufacturer: ThermoPro


Item Weight: 15.2 ounces


Item model number: outdoor thermometer


Batteries: 4 AAA batteries required. (included)


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Apr 21 – May 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Does a Good Job, Until It Doesn't
Good value in a useful product where the temperature reading of a pool, spa or other facility is desired remotely, indoors, for example. We had no way to check the calibration, but its readings gave no reason to be doubted. Just installed--no indication of its longevity, but the internals appear to be very well made. One caveat: keep the threaded ring on the remote sensor tight or moisture may get in and disrupt its operation. If the pool has a cover, we suggest cutting a clearance opening in it to keep the remote unit exposed to the atmosphere, again to minimize the chance of moisture intrusion. Update: Unit worked very well for 2-3 weeks, then stopped communicating the temperature. Opening the pool unit revealed a troubling issue--water inside. We tried drying it out, which enabled it to work for a while, but then more water got in. We could not determine where the leak was, so sadly, just tossed it. Too bad the water sensor doesn't like being in the water! ... show more
Reviewed in the United States on February 8, 2025 by Amazon Customer

  • It does not keep working
I have bought 2 of these and they are a joke. My first one lasted 11 months, this one lasted only a couple of months. It reads now 112 degrees when in fact it is 102. They keep going higher then will go to -9. Will be looking for a new brand
Reviewed in the United States on February 19, 2026 by Amazon Customer

  • Excellent Pool Thermometer
Excellent! Bought this unit to replace a different brand that was defective. Extremely satisfied with this unit, I have the temperature sensor in the skimmer box of our inground concrete pool and the receiver unit on the refrigerator in the kitchen, at least 50'. Works great, no connection issues,very accurate, large numerals. Very easy set up right out of the box. Couldn't be more satisfied. Unlike the previous brand that we had for a while but then the sensor began to leak. Contacted their customer service and their only response was "it's out of Warranty ". It probably only needed a new gasket, but no, they were of no assistance. So I wrote a negative review for their product on Amazon. So in conclusion, I am very happy with this pool thermometer and highly recommend - plus their product description mentions that they have excellent US based customer service, hopefully I won't need it... ... show more
Reviewed in the United States on May 2, 2025 by Amazon Customer

  • Does not last
Bought this in March of 2025, it stopped working in November of 2025. I cannot open the thermometer to change the batteries, so this basically only lasts as long as the first set of batteries you install. Waste of money.
Reviewed in the United States on February 22, 2026 by Cori

  • They all leak eventually… vacuum sealer is the answer.
I’ve tried a number of these type of remote bluetooth thermometers, both brand-name & knockoffs… they all leak and fail, eventually. I’ve taken to wrapping the “watertight” joint tightly with electrical tape, then vacuum-sealing the units in a bag using my foodsaver. If you line it up nice & square in the bag, it’ll float in the correct orientation just fine. Temperature response will be a bit slower, but it’ll equalize in a few minutes. Works well as insurance for the intended application, and i haven’t had a failure since i bagged & sealed this and one other unit. ... show more
Reviewed in the United States on October 14, 2025 by jxe

  • Only lasted 3 months…but the company made good!
UPDATED: So after my initial post in February, the company reached out to me to offer me a free replacement and received it shortly after. The replacement has been working flawlessly ever since without issue. This company was proactive in making sure that customer satisfaction is a top priority. Changed my rating to 5 stars. ORIGINAL POST: Purchased this 3 months ago and it worked seamlessly until today. The display started to show the numbers broken up and then the receiver was unable to show the water temp. I thought perhaps the batteries needed to be replaced (which I did) and still nothing. All the receiver displays now is the air temp and humidity. The seal was tight and no water made it into the transmitter. So very disappointed and the return window is closed. Going to the trash and will need to find another alternative. ... show more
Reviewed in the United States on February 26, 2025 by P. Perez P. Perez

  • Great while it worked
Really too bad, it worked great for 6 months and then it died. Used in a hot tub that was in a screened porch. The screen on the floating temp probe went blank and even new batteries didn’t revive it. It doesn’t appear that water got into the battery compartment and there was no sign of corrosion so I am not sure what caused the failure. ... show more
Reviewed in the United States on March 12, 2026 by DT

  • Doesn't last, don't buy
Another floating pool thermometer bites the dust. I've tried several of these from different companies. Not a single one lasts. This one lasted barely a year, and it taken out of the pool and batteries removed for the four months we're away each in the summer, so at most 8 months in use. Usually they just die. This one reports nonsensical readings. If my pool temp was 26 degrees, it would be a block of ice. Not likely in Florida. Even when this thing did work, it was cranky and wouldn't always communicate with the base even though it's only about 40 feet away and separated by nothing but a pane of glass. And it has new, confirmed good batteries, there is no dirt or corrosion on the sensing contacts, no water inside, ... And yes, it's Fahrenheit, not Celsius. ... show more
Reviewed in the United States on November 8, 2025 by Don Don

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