Direct replacement for Jandy Aqualink RS, Polaris, and Zodiac systems for easy installation
Includes 10k thermistor for accurate temperature readings
20-foot cord provides flexible placement options
Supports use as water, air, or solar temperature sensor for versatile pool monitoring
Summarized by Shop
The aftermarket temperature sensor from Optimum is a direct replacement for Jandy® AquaLink® temp sensor, but can also be used with Polaris® and Zodiac® control systems.
Features:
Compatibility: Jandy®, Polaris®, and Zodiac® control systems
Replaces: Jandy’s AquaLink RS® Temperature Sensor P/N 7790 (R3002900), 7784, 7786, and 7791
Includ
Manufacturer
Optimum
Model
TEMS-J
Thermistor
10k ohm
Cord Length
20 feet
Shipping Weight
1 lb
Compatible Systems
Jandy, Polaris, Zodiac
Summarized by Shop
5.0
18 ratings
5
4
3
2
1
Terrified customer
After my temperature sensor said it was 28° and oh hey let’s turn on the freeze protection on even though we are all sweating in 99° temps this July. I decided to buy a new sensor. Seriously terrified to do this. Oh so easy to do and yes it works. I’ve earned my pool girl tool belt!! I’m so proud lol
Thanks Pool Guy Supply for having a great price on this.
K
Karen · July 21, 2026
Temperature Sensor Replacement for Jandy®/Zodiac® Systems by Optimum Pool Technologies
K
Kevin · August 19, 2026
Part worked great. Fast shipping.
The temp sensor was easy to install. Would definitely buy again.