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Sense MFSU-ASSY Flex Add-on Sensors, White

4.6 4.6 out of 5 stars 210 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
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$50.00
FREE International Returns
No Import Fees Deposit & $10.52 Shipping to Germany Details

Shipping & Fee Details

Price $50.00
AmazonGlobal Shipping $10.52
Estimated Import Fees Deposit $0.00
Total $60.52

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Purchase options and add-ons

Brand Sense
Item dimensions L x W x H 48 x 1 x 1 inches
Material Plastic
Item Weight 0.33 Kilograms
Style Add-on Sensors

About this item

  • Adds functionality and compatibility to the base Sense home energy monitor
  • Up to one set of Flex add-on sensors can be added
  • Enables monitoring of one of the following: dedicated circuit, 400A split-service, standby generator or solar power
  • Compatible with all generations of Sense monitors (not needed for Sense Flex or Sense Solar)
  • Now with a locking mechanism and thinner profile to fit most standard and main breaker meter combo panels

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Product Description

Flex Silverline Square

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

Circuit Monitoring

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.

400 Amp Split Service

400A split-service

Whole-home monitoring for homes with split-service 400A electrical systems, more common in newer, larger homes.

Stand By Generator

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 Monitor

Solar monitoring

Solar monitoring for homes that already have Sense, but have recently added a solar power system.

Product guides and documents

User Manual (PDF)

From the brand

Previous page
  2. Sense Logo

    Understanding how much energy your home is using, when and where, empowers you to find savings. The average user saves 8% on their electric bill.

  3. Brand Story 4.1

    Which is right for you?

    Scroll to find out.

  4. Sense Flex

    Sense Flex

    Our most comprehensive energy monitoring system. Monitor main energy plus: dedicated circuit OR generator OR 400A split-service.

  5. Sense Monitor

    Sense

    Our base model for non-solar homes.

  6. Sense Solar

    Sense Solar

    Monitor energy use and solar production. For homes with solar power systems.

  7. Sense Logo

    Sense’s mission is to reduce global carbon emissions by making homes smart and efficient. We make it easier for people to take care of their homes and to actively participate in a cleaner, more resilient future.

Next page

Product information

Technical Details

Additional Information

Warranty & Support

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Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Customer reviews

4.6 out of 5 stars
210 global ratings

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Customers say

Customers find the electronic sensors functional and easy to install. They monitor dedicated circuits, solar panels, and heat pumps accurately. The software works well and is straightforward to use.

AI-generated from the text of customer reviews

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FunctionalityMonitor accuracyEase of installation
13 customers mention "Functionality"13 positive0 negative

Customers appreciate the functionality of the product. They find it easy to install and use, providing dedicated circuit monitoring for separate circuits. The software is also praised as great. Overall, customers consider it a useful and effective product.

"...Easy to install and the software works great." Read more

"The CT clamps/sensors worked perfect. I wanted to monitor my EVSE separately and this did the trick...." Read more

"Work great. Needed Sense customer support to help configure once installed as I was getting some funky readingsat first...." Read more

"These worked very well to add dedicated circuit monitoring for (2) separate circuits. Easy install with the Sense app. Works well...." Read more

11 customers mention "Monitor accuracy"11 positive0 negative

Customers appreciate the monitor's accuracy. It can monitor solar panels, dedicated circuits, heat pumps, and additional main kts. The sensor starts monitoring perfectly and reads solar very close to what their solar installer's app is showing.

"...These are reading my solar very close to what my solar installer's app is showing so I'm very satisfied." Read more

"...They were able to quickly resolve and now I'm getting accurate power generation from my solar system." Read more

"...Easy install with the Sense app. Works well. Good addition to any Sense Energy monitor install." Read more

"...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...." Read more

7 customers mention "Ease of installation"7 positive0 negative

Customers find the electronic sensor easy to install.

"Very easy to install. Purchased the additional clips to monitor my solar performance and seems to monitor very accurately...." Read more

"...In my case this was two separate heat pump systems. Easy to install and the software works great." Read more

"...Worked with my Sense energy monitor and was easy to set up." Read more

"...Easy install with the Sense app. Works well. Good addition to any Sense Energy monitor install." Read more

Sense solar system monitor
5 out of 5 stars
Sense solar system monitor
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!
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Top reviews from the United States

  • wasyed
    5.0 out of 5 stars It works great!
    Reviewed in the United States on August 26, 2024
    Verified Purchase
    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.
    Helpful
     Report
  • Mona A.
    5.0 out of 5 stars Sense Flex Add On Sensors work well to monitor heat pump energy use
    Reviewed in the United States on October 31, 2023
    Verified Purchase
    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.
    2 people found this helpful
    Helpful
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  • Darken
    5.0 out of 5 stars Excellent quality CT clamps
    Reviewed in the United States on March 24, 2024
    Verified Purchase
    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.
    Helpful
     Report
  • StevenB
    5.0 out of 5 stars Sense solar system monitor
    Reviewed in the United States on September 5, 2024
    Verified Purchase
    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!
    Customer image
    StevenB
    5.0 out of 5 stars Sense solar system monitor
    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!
    Images in this review
    Customer image Customer image Customer image
    Customer imageCustomer imageCustomer image
    Helpful
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  • Yospeedy
    4.0 out of 5 stars Required to accurately monitor HVAC heat pump
    Reviewed in the United States on December 13, 2021
    Verified Purchase
    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.
    3 people found this helpful
    Helpful
     Report
  • Jonathan Pincus
    5.0 out of 5 stars Work as described
    Reviewed in the United States on January 12, 2025
    Verified Purchase
    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.
    Helpful
     Report
  • RFA
    5.0 out of 5 stars Use these to add Solar or Dedicated Circuit monitoring.
    Reviewed in the United States on September 14, 2023
    Verified Purchase
    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.
    Helpful
     Report
  • MACR
    5.0 out of 5 stars Jyst great
    Reviewed in the United States on January 29, 2022
    Verified Purchase
    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.
    3 people found this helpful
    Helpful
     Report