



🌡️ Stay cool, stay connected — never miss a perfect temp!
The Jandy Temperature Sensor 7790 is a compact, flange-mounted sensor designed for precise temperature measurement in water, air, and solar applications. Compatible with Jandy 7784 and 7790 models, it offers quick plug-and-play installation to restore accurate system readings and optimize pool heater and solar performance.
| ASIN | B00EV75E22 |
| Best Sellers Rank | #1,571,226 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2,194 in Swimming Pool Heater Parts |
| Brand | Jandy |
| Customer Reviews | 3.2 3.2 out of 5 stars (96) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.99 ounces |
| Item dimensions L x W x H | 4 x 2 x 2 inches |
| Item model number | 7790 |
| Manufacturer | Jandy |
| Mounting Type | Flange Mount |
| Product Dimensions | 4 x 2 x 2 inches |
| Specific Uses For Product | Water, Air, Solar |
| Style | Modern |
| UPC | 610074776178 |
K**R
... off and then noticed my Jandy control showed a super high water temperature
I noticed my heater would quickly turn off and then noticed my Jandy control showed a super high water temperature. I figured the system was getting the wrong temperature and that this may fix the issue before I spend money on a pool expert. It was easy to switch out, plugged right in and my heater is back up and running.
R**Y
Changed from 5 stars to 1 star - Sorry!!!
My original review was 5 stars and was voted most helpful. When I first put the sensor in it was awesome, a great savings or so I thought. Unfortunately the sensor only lasted about 6 months. Like many of the other reviews, the temp was reading extremely high and the solar would not turn on. The original sensor lasted about 8 years. This one barely made it 6 months. If you figure that your time to install it is worth anything, the Jandy sensor is worth the extra $20. This was a huge disappointment, and waste of time and money. I would recommend buying the better sensor, not this cheap one.
V**N
Perfect replacement for my original that had been ruined over ...
Perfect replacement for my original that had been ruined over 12 years of use. 5 minute installation and a huge savings over the local shop price for purchase and installation.
P**L
The accurate sensor
I recommend this model... Accurate. A bit more expensive. Installs easily, just need a small screwdriver (for the two wires in the controller) and a larger screwdriver for the strap. The generic model is not accurate.
O**1
Don't buy this cheaper temp sensor and expect beyond a 30 day warranty. Spend $10 more and get the manufacturers part.
Product was purchased April 15, 2016 by Pool Guy Supply, Inc., and failed in October 2016. Seller claims there is only 30 day warranty although this is not described on the listing. Don't accept the lower price from Pool Guy Supply, Inc. as the part is not as well made and it will fail as others have written. It is clear the seller doesnt care about getting repeat customers on their other products which would be the result if they had loyalty to their customers. Spend the $10 more than buying from Pool Guy Supply, Inc and buy the original part and get the original manufacturer's warranty.
N**S
Solid replacement for dead sensor
works perfectly. Design is slightly different than one I was replacing but nothing that couldn't be worked around.
R**J
Stops working after only two months!
Don’t buy! Total fraud!! Stopped working after 2 months. Seemed fine at first, then began reading warmer and warmer and warmer. Now it’s just useless, which is terrible because I can’t properly control heat to my pool with automation because the system thinks it is already up to temperature.
M**K
May not be that great of a value, especially if it fails in less than one year.
This seemed like a good value when I bought it last year. I had to put a new O ring on it because it leaked, then it failed after 9 months. I contacted the seller and was told it only had a 30 day warranty. I bought another one last week, and had to put a new O ring on it because it leaked also. I'm hoping this one lasts longer than 9 months. If not, I won't be buying another one.
Trustpilot
1 month ago
2 weeks ago