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Sense

Sense Flex Home Energy Monitor

    • Based on 310 reviews
Condition: New
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$296.00 Why this price?
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Availability: Only 7 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, May 25
Order within 4 hours and 39 minutes
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Style: Flex Energy Monitor


Features

  • COMBINES THE SENSE MONITOR AND FLEX SENSORS, allowing you to monitor up to two 120V/240V circuits, monitor your generator, solar, or 400A split-service system.
  • SENSE SAVES: Sense saves you energy and money by providing insight into your home's energy use and activity. NOW SUPPORTING TIME-OF-USE RATE PLANS.
  • SEE WHATS UP. KNOW WHATS ON: Track how much electricity youre using, what time your kids got home, or when someone leaves the basement light on. Sense identifies patterns in your energy use to help your family be more efficient, informed, and secure.
  • MONITOR YOUR HOMES ENERGY USE FROM ANYWHERE: Real-time data through our iOS, Android, and web apps.
  • AVOID DISASTER: Set custom notifications for critical devices, like your sump pump, well pump, or flat iron. Sense is not currently available or compatible outside the United States and Canada.

Manufacturer: ‎Sense


Part Number: ‎NFBB-ASSY


Item Weight: ‎3.16 pounds


Product Dimensions: ‎7 x 7 x 9 inches


Country of Origin: ‎Mexico


Item model number: ‎NFBB-ASSY


Color: ‎White


Style: ‎Flex Energy Monitor


Item Package Quantity: ‎1


Included Components: ‎Power Cable, 2 Sets of Current Sensors (4 pcs), Sense Home Energy Monitor, Mounting Bracket, Antenna


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: November 12, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 25

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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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Already Saving Me Money
New: I’ve had to remove a couple of stars from my rating, after using it over the winter and finding a pretty big issue. My circuit breaker panel is mounted outside, and I when it started getting cold, I was noticing that my monitor started to quit working. When I looked into it, I saw that the specifications of the monitor say that it is only rated down to 32°F, which seems too high to me for something that is mounted outside in a metal box. What’s worse is that my particular monitor starts to malfunction when the temperature is in the 40s. I tried to get support from the manufacturer, but we kept going back and forth because they were asking about my WiFi network and other unrelated things. Finally, they asked me to send it to them - at my own expense - and they’d check it out. I’ve decided to make a warming system for it instead, and my parts for that should arrive today. I still stand by my original review as far as how well this works and how neat it is, but when it gets cold outside, I’d kind of like to be able to see how much energy my heat pump is using instead of looking at an app with blank data because my monitor is too cold to operate. If you’re looking for a monitor and you have an outside circuit breaker box AND you live somewhere that gets below 32° in the winter, I’d recommend that you look for another solution. Original: I live in Texas, and the past summer’s heat wave was brutal on my power bills. I’ve never paid so much for electricity before, and electricity is cheap where I live. I live in a rural area, and everything in my home is powered by electricity, I’ve got a family of five, and we have a lot of electric gadgets. I also have two cars that get plugged in. All of that, plus constant AC in the summer, and I was getting $450 a month electricity bills. I decided to install solar to try to knock some of that bill down, and I also decided to get something to help me manage my power usage. I saw this, and decided to give it a try. I installed it myself, and it was very simple. In my outdoor circuit breaker panel, I can’t turn off all of the power, but as long as you’re careful and aware that you could die if you touch the wrong thing and avoid any danger, it’s not that bad. I’d still recommend that an electrician installs it if you’re not 100% confident in your ability to work around live power. This thing has some sort of detection feature to identify things, but it’s not perfect. In the two months that I’ve been using it, it’s identified some things, but it hasn’t been able to identify the majority of the stuff in my home. I’m surprised that it hasn’t detected our cars when they charge, because that’s a very identifiable power signature. If I can immediately see when a car is plugged in while looking at the app, this “smart” thing should be able to identify it, too. It’s found my air conditioner, clothes iron, printer, oven, and a couple of other things, but it still doesn’t know when my stove is on, when my cars are charging, when my coffee maker is running, when my washing machine is running a load, etc. There really needs to be a way to tell the app when you know that something is running to help it “learn” your devices. From an energy monitoring standpoint, this thing is outstanding. It is super accurate at measuring my energy usage, and it is dead accurate compared to what my utility says that I’m using. My utility lets me see my usage, and it’s always exactly the same as what Sense says that I used, both energy received from them and energy sent back from my solar panels. Even if it’s bad at detecting devices, which is one of their selling points, it’s still great for helping you save money by figuring out where you’re using power that you don’t need to be. One night, I was looking at the power graph when my wife turned off the lights outside of our garage, and I saw a huge drop in the power being used. I thought that all of my lights were LED, but apparently those weren’t. That light gets left on all of the time because we can’t see it from inside, so it was 6 60W bulbs running all of the time. 360W of wasted energy for hours, all of the darned time. Sometimes I would come home from work and see those lights on during the day, so they might have been on since the night before. I replaced them with 6 6W lamps, so now when they get left on, they’re only using 36W. Ten times cheaper. It would take a very long time for that savings to pay for this gadget, but that’s not the biggest thing that it’s saved me money on. I’ve only been using the solar panels for a month, but with the Sense app, I could see that my solar inverter was shutting down many times during the day, every single day. My inverter would show no faults, and it wasn’t alerting me of any problems. Without the Sense, I would have never known that this was happening. By watching the graph, I was able to see that my inverter was shutting down every time that the tankless electric hot water heater was running. When it turned off, it would stay off for three minutes before resuming production. Whenever we would be in the kitchen, every time we rinsed a cup, washed our hands, or did anything with hot water, our solar would stop producing for three minutes. Our dishwasher sprays a little bit of hot water every five minutes while it’s washing dishes, so every time it does that, no solar for three minutes, if we ran our dishwasher at noon, during peak solar production, we would be losing 3/5 of our solar power during that hour. That is a LOT of lost money over a pretty short time, and I never would have known about it without this gadget. I fixed the water heater, which was injecting too much electrical noise onto my AC lines and shutting down my inverter, with a pair of AC starter caps that cost me $20. Now, using the Sense app, I can see that my solar system is producing power constantly throughout the day. Just that one fix will save me enough money to make buying this worth it. The app is very nice and intuitive, and it breaks down your energy usage very well. Even if it doesn’t identify everything, you can still see what happens when you unplug things. Does the amplifier in my media closet need to be plugged in while I’m not using it? Well, it’s burning 50W while it’s in standby doing nothing, so maybe I can leave it unplugged, or use a smart switch to turn it on when I want to use it, I would rate this 5 stars if the device detection worked as well as they claim it did. This was why I purchased thus one instead of other ones, but it’s really bad at identifying things, it shouldn’t take a year to figure out what my electric range is. I just had it identify something after it’s had two months of watching it turn on and off. That’s way too long. Other than that, though, this is really nice. ... show more
Reviewed in the United States on December 12, 2022 by ES
    • Good for Overall Electrical Usage - Poor detection capability
I have had the device for about 3 weeks now and while I have been told several times by their tech support that it is still learning, it has only detected on its own 3 devices in my house and one of them is a major device. It does a good job at integrating 3rd party devices with power monitoring, such as TPLink/Kasa and Philips Hue, it does not cover the full range of products. I purchased some TPLink/Kasa smart plugs with the newest Matter protocol, and it currently does not support them. While you can spend time cataloguing all of your electrical energy users, it really does not seem that it uses this information very well. There is no ability to help it learn by telling it what is running at a given point. I have 3 240 volt users of energy, the stove, dryer and an EV Charger. The only reason it knows about the EV charger is that I purchased the extra sensor clamps and put it on that dedicated service. It has only partially recognized the dryer. Today when the dryer was running, one of the “bubbles” in the chart recognized that the dryer was running, however the major component of the dryer was encapsulated in the “Other” bubble and it does not seem to be catching on that the majority of the usage is not being captured. It has not attempted to even recognize the stove/oven yet and it runs almost every day. The only reason it has recognize most of the devices including the fridge and the stand alone freezer is that I recently put smart plugs on those also to force it to see them. Technical support just keeps telling me to wait as it is a learning device and will eventually recognize them. This seems to be a common complaint in the forums and when you describe this to technical support with backup data, they try to soft answer you as opposed to giving you the sense that they will use the feedback as improvement. Overall I am neutral about the product and it is an expensive proposition if you cant regain the initial investment through energy savings. It’s integration with Home Assistant is mediocre at best. ... show more
Reviewed in the United States on October 20, 2023 by Dave N.
    • Great for a landlord!
The Sense Flex Home Energy Monitor has proven to be an invaluable tool for monitoring and managing my home's power usage. Installation was surprisingly easy, and the step-by-step guidance provided made the process straightforward. I specifically purchased this monitor to keep tabs on the power usage in a tenant's basement apartment, which is connected to my main meter through a sub-panel. The real-time insights provided by the Sense Flex allow me to ensure that the power consumption remains reasonable and in line with expectations. Having the ability to track energy usage not only provides peace of mind but also allows for fair and accurate adjustments, such as rent charges, if power consumption becomes unusually high. The device's user-friendly interface and the detailed breakdown of energy usage make it a valuable investment for anyone looking to have better control and understanding of their home's power consumption. Overall, the Sense Flex Home Energy Monitor offers a convenient and effective solution for keeping power costs in check. ... show more
Reviewed in the United States on November 22, 2023 by Alexander B

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