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Add functionality and compatibility
Flex sensors enable tracking of 400A split-service panels, monitoring of your standby generator, dedicated circuit monitoring, or solar monitoring. Only one set of add-on sensors can be added to a base monitor. Flex sensors cannot be added to Sense Flex and Sense Solar monitors.
Increased functionality with optional Flex sensors
Dedicated circuit monitoring
Track up to two 120V or 240V circuits. It’s the best way to track devices like your HVAC system, EV charger or variable speed pumps.
400A split-service
Whole-home monitoring for homes with split-service 400A electrical systems, more common in newer, larger homes.
Standby generators
If your power is interrupted, Sense can tell you when your back-up generator takes over and how much energy the home is using.
Solar monitoring
Solar monitoring for homes that already have Sense, but have recently added a solar power system.
Jonathan Pincus
Reviewed in the United States on January 12, 2025
Work great. Needed Sense customer support to help configure once installed as I was getting some funky readingsat first. They were able to quickly resolve and now I'm getting accurate power generation from my solar system.
StevenB
Reviewed in the United States on September 5, 2024
I really like my Sense home electrical monitoring system, but since I added the solar extension, it really provides me with the data that I want to see about my solar production. This is a great value, if you already have a Sense system, and if you have solar as well. Highly recommend!
wasyed
Reviewed in the United States on August 26, 2024
Very easy to install. Purchased the additional clips to monitor my solar performance and seems to monitor very accurately. These are reading my solar very close to what my solar installer's app is showing so I'm very satisfied.
Darken
Reviewed in the United States on March 24, 2024
The CT clamps/sensors worked perfect. I wanted to monitor my EVSE separately and this did the trick. Worked with my Sense energy monitor and was easy to set up.
RFA
Reviewed in the United States on September 14, 2023
These worked very well to add dedicated circuit monitoring for (2) separate circuits. Easy install with the Sense app. Works well. Good addition to any Sense Energy monitor install.
Mona A.
Reviewed in the United States on October 31, 2023
I have a Sense Energy monitor which is great, but does not monitor an individual heat pump because the energy use is too variable to recognize it. The Flex add on sensors solve this issue. One pair of sensors can actually monitor two 220V circuits. In my case this was two separate heat pump systems. Easy to install and the software works great.
MACR
Reviewed in the United States on January 29, 2022
I had the regular Sense energy monitor, recently installed solar panels, so I made sone research and find out that the regular sense can also monitor the output of the solar panels. Just need to remove a cover on the sense monitor , then you can plug this clamps and start monitoring the solar output. Is very precise considering we used a 80’ extension, it matches the output on the microinverter QS1-A from APSystem using an ECU-R monitor. Totally recommended.
Yospeedy
Reviewed in the United States on December 13, 2021
After many months Sense could not “sense” our whole house Mitsubishi H2i heat pump. This solved the problem but can only be used on one device. I have a heat pump water heater as well that it does not sense accurately and no way to expand. Unfortunately, Sense technology is not really capable of correctly sensing a house that use multiple new heat pump technologies.
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