Sense Flex

Sense, plus additional Flex sensors for added capabilities.


Free Shipping & 120 day money back guarantee


*Subject to approval of credit application. Rates range from 5.99% to 29.99% APR, resulting in, for example, 12 monthly payments of $87.91 at 9.99% APR, per $1,000 borrowed. APRs will vary depending on credit qualifications, loan amount, and term. Bread® pay-over-time plans are loans made by Comenity Capital Bank.

Savings, made simple

Sense helps you find opportunities to save from Day 1. Get tips on how to make your devices run more efficiently. People who use Sense save, on average, 8% on their electric bill.

A personalized experience

After you tell us about your home, you can track your core devices and see where you’re using the most energy.

Estimated usage

If Sense is able to identify a device, you will begin to see estimated usage and costs which helps you understand how much a device is contributing to your electricity bill.

Real-time usage

For some devices, you will see real-time data populate as Sense learns your home.

Introducing Watt Check

A simple way to check how much energy your light bulbs consume. Flip the switch and Sense will help you find opportunities to save.

A quick and easy way to find savings

Go around your home to get real-time estimates of how much energy your lights are using. Sense will walk you through the process and you’ll have answers in seconds.

Get real-time results on inefficiencies

Find out which lights are efficient and which could be switched to LEDs. Don’t forget to check your hard-to-reach and outdoor lights, too!

Track important loads

You can reliably monitor up to two 120V or 240V circuits directly. Perfect for large loads, like HVAC systems and EV chargers or hard-to-detect variable motors, like heat pumps.

More than one panel?

Newer, large homes sometimes have two 200A panels in parallel that make up 400A split-service. Flex sensors make sure we’ve got your whole home covered.

Watch your backup

If you have a whole-home generator, Sense can monitor that, too. So you don’t have to be in the dark about how much electricity you’re using on standby and for how long it will last.

Or monitor your solar

It’s a not-so-secret secret. Click here to learn more about how Sense Solar can help you get the most out of your solar system.

Track your usage

See your usage month-to-date and what you’re trending towards. Is your energy usage higher than you were expecting?

What’s happening right now

Using the Power Meter, you can see exactly how much energy your home is using right now. 

Compare current vs. past energy usage

See how much energy you’ve used compared to the past month or year. Any surprises?

Monitor your home from anywhere. Know what’s happening at any time.

No matter where you are, Sense’s easy-to-use mobile app will keep you informed on what’s happening in your home.

Get real-time notifications. Keep your home running smoothly.

Sense can notify you when you’ve reached a new peak energy use level. If you’re surprised by the alert, check out the app to see what’s using energy in real-time.

On average, with Sense installed you can save up to 8% on your energy bill.

How Sense Works

Our Blog

Why Energy Efficiency
is a Win-Win

Have you ever wondered why your utility offers energy efficiency tips?

Read more
Our Blog

A Letter From Sense
CEO Mike Phillips

It’s been a busy year here at Sense! And, 2023 is shaping up to be an even bigger year for us.

Read more
Our Blog

Ingenious Clothes
Dryer Hacks

We recently heard from two people who saved money on their clothes dryers with Sense insights.

Read more


See wattage for each bulb or group and turn them on or off in Sense.

Learn more


Voice queries, like “Alexa, ask Sense how much energy is my home using?”

Learn more


Wattage and control for the Wemo Insight smart plug.

Learn more


Wattage and control for all energy-monitoring smart plugs.

Learn more


Communicate with devices in your home using the IFTTT protocol.

Learn more



Sense Flex

Sense Solar





Sensors (2 per pair)

One pair

Two pairs

Two pairs

Compatible with

Homes without solar systems

One of the applications below

Homes with solar systems


400A split-service

Generator support

Dedicated Circuit Monitoring


Edward N.

October 2021

I am very happy with my purchase of the sense energy monitor. The user interface is wonderful, the information it provides is extremely helpful in many ways, the interface with smart plugs and the dedicated circuit monitoring works perfectly. It has detected 15 different devices in the 2 months I have had it, which is better than I expected. However, the device detection needs improvement. When a device is detected, I’m never sure if it has detected only one of several components in the device or all of it. But, I knew about this before I bought it, and hopefully this will improve over time.

Chuck K.

September 2021

Once I followed the instructions it worked great. I used them on my new variable speed air conditioner and air handler. Neither would identify and they are the largest loads in my home. I have had them in for about 8 months and they are great. Now I have all the information on these devices that I can use.

Jeffrey E.

September 2021

Knowing the total power usage of your home, then by each device, including the “always on” from the many devices in stand-by and sleep modes, makes a huge difference in helping shape decisions and habits to improve efficiency. I don’t check the app daily anymore, but I use it to help monitor and understand, so that I can continue to use smart plugs, schedules, and other options like delayed starts on major appliances, to save energy, support the grid, and be aware. Easy to install. Works well.

Tech Specs

Size and Weight
137mm x 66mm x 32mm, 220g

Power consumption
< 5W, 0.1A

Current Transformer Specs
CAT IV 250V 200A max

Cable length: 46 (116.84cm)

Inside Diameter: 1” (2.54cm)

802.11b/g/n Wi-Fi Bluetooth Smart
Bandwidth use: ~300MB per day

Signal Processing
1MHz Sampling Rate (4M data points per second) 1GHz ARM Processor

Two sets, iron core, copper-wound sensors

Environmental Ratings

Relative Humidity: < 90%:

IPX0 rating, no water ingress

Temperature: 32-154ºF (0-68ºC)

Elevation: < 6562” (2,000m)


Sense Flex
Sense Solar

Real-time power meter accurate within 1% of utility meter

Machine learning device detection

ETL/Intertek certified for installation inside electrical panels

Custom device notifications (for found devices)

Power Meter and on/off event timeline for found devices

Custom goal setting and tracking

Whole-home historical energy and cost data by day, week, month, year, billing cycle

Device-level historical tracking by day, week, month, year, billing cycle (for found devices)

Time-of-use rate plan support, with high rate zone notifications

Significant energy change notifications by time period, type, or comparison

Automatic Always On electricity tracking with user-input device inventory

Similar home energy comparisons

Historical carbon intensity metrics

Current day carbon intensity forecast

Real-time fuel mix by regions (for supported regions)

Monthly email reports

Fully downloadable whole-home and device level data via web app

Web, IOS, and Android interface

400A split-service compatibility

Standby generator compatibility

Dedicated circuit monitoring for up to two circuits

Solar monitoring

Real-time solar production

Real-time solar utilization

Real-time solar sell-back

Historical solar production and utilization by day, week, month, year, billing cycle

Got questions?

Can I used Dedicated Circuit Monitoring to monitor a branch circuit?

Dedicated Circuit Monitoring is designed to monitor circuits dedicated to a single device. Using Dedicated Circuit Monitoring with a branch circuit can negatively affect detection for devices on that circuit and may result in inaccurate wattage or double counting.

Can I install Sense with a generator?

Sense users with a standby generator can use the middle port to track a generator’s production within Sense. Installation with a generator system requires that the middle port is unused by solar monitoring or another feature.


Please note: an ATS is required. At this time, Sense does not support non-ATS Generators.


For instructions on setting up Sense with Generator, please consult the Sense with Generator Installation Guide.

Does Sense Flex support 400A split service?

Sense is compatible with 400A service (provided via dual 200A panels). Installation within a 400A system requires that the middle port is unused by solar monitoring or another feature.


For instructions on setting up Sense with 400A Split Service, please consult the Sense 400A Split Service Installation Guide.

Do I need an extension cable for my 400A setup?

If you’re installing Sense with Flex add-on sensors to support a 400A split-service system, it’s possible you may require an optional extension cable for your Flex sensors.

The cable length of the stock sensors is 46”. Extension cables are available in 4’, 12’, 25’, and 40’ lengths. They can be coupled up to 80’.


The cables must feed between the panels and extend up to the incoming mains in the second panel.


As an easy way to measure the required cable length for your setup, take a piece of string and extend it from the location of your Sense monitor to where the sensors will connect in your second panel, following the illustration above. Be mindful of any detours that the cable must take from panel to panel, like if it needs to be routed around a junction box or another electrical panel.


We recommend adding 5-10 inches to your measured length to add slack for cable routing and management.


To purchase extension cables, click here.