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Fusion Energy

Smart Home Energy Monitor with 16 50A Circuit Level Sensors Real-Time Power Usage Electricity Cost Tracking Ideal for

$149.99$159.99

50+ bought in the past month

About this item

  • ⚡ EASY INSTALLATION: Installs in circuit panel of most homes with clamp-on sensors. Supports single-phase up to 240VAC line-neutral; single, split-phase 120/240VAC; and three-phase up to 415Y/240VAC (no Delta). The branch lines can automatically match different phases and have no restrictions in terms of quantity and voltage.Panels with access only to busbars will need flexible sensors available from SEM-Meter.
  • ⚡ ENERGY MONITORING ANYTIME, ANYWHERE: Monitor your home's real power anywhere, anytime to prevent costly repairs, conserve energy, and save costs. Monitor solar / net metering. Light commercial 3 phase option available as a separate bundle. Protected by a 1-year warranty.
  • ⚡ VARIOUS ELECTRICAL APPLIANCE MONITORING: Comes with 16 50A sensors to accurately monitor your air conditioner, furnace, water heater, washer, dryer, range, etc.
  • ⚡ LOWER YOUR ELECTRIC BILL: SEM-Meter measures real-time spending and gets actionable notifications to understand where savings can be made, both to lower your electric bill and to conserve energy and protect the planet’s resources. Be an environmentalist.
  • ⚡ REAL-TIME ENERGY DATA: Connect SEM-Meter device via 2.4GHz WiFi to monitor energy usage, with an accuracy range of 1%. View usage in real time through Android/Apple software. Statistics of power usage in now/day/week/month/year format: the validity period of hourly exported data is 90 days, and the exported data of day/month/year data is permanent, available at any time Export from application.
  • ⚡ Super Privacy Mode ! run without our cloud ,without our app!! use your own MQTT server only!! run in LAN without internet access !!! (HomeAssistant with MQTT required.)
  • ⚡ SMART ELECTRICITY BILL ALLOCATION FOR RENTAL HOMES: Perfect for rental houses, shared apartments, and multi-room properties. With multiple circuit monitoring, you can track power usage for each bedroom, common area, or EV charger without installing multiple electricity meters. Supports customizable electricity rate templates including peak, off-peak, and holiday pricing, allowing automatic electricity cost calculation based on time-of-use tariffs. After setting the pricing template, users can clearly see electricity usage and cost for each room or circuit, making billing transparent and helping landlords or property managers manage fair electricity allocation.

Key details

color_spec
‎Black
manufacturer
Fusion Energy
color
Black
style
16 50A Circuit Level Sensors
included_components
SEM-Meter 16 50A Circuit Level Sensors, 2 200A Circuit Level Sensors, 16 50A Circuit Level Sensors

Technical specifications

item_model_number
SEM-Meter

Item information

batteries_included
No
batteries_required
No
best_sellers_rank
#61,870 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #7 in Home Automation Modules
date_first_available
June 12, 2024
Highlights

About this item

  • ⚡ EASY INSTALLATION: Installs in circuit panel of most homes with clamp-on sensors. Supports single-phase up to 240VAC line-neutral; single, split-phase 120/240VAC; and three-phase up to 415Y/240VAC (no Delta). The branch lines can automatically match different phases and have no restrictions in terms of quantity and voltage.Panels with access only to busbars will need flexible sensors available from SEM-Meter.
  • ⚡ ENERGY MONITORING ANYTIME, ANYWHERE: Monitor your home's real power anywhere, anytime to prevent costly repairs, conserve energy, and save costs. Monitor solar / net metering. Light commercial 3 phase option available as a separate bundle. Protected by a 1-year warranty.
  • ⚡ VARIOUS ELECTRICAL APPLIANCE MONITORING: Comes with 16 50A sensors to accurately monitor your air conditioner, furnace, water heater, washer, dryer, range, etc.
  • ⚡ LOWER YOUR ELECTRIC BILL: SEM-Meter measures real-time spending and gets actionable notifications to understand where savings can be made, both to lower your electric bill and to conserve energy and protect the planet’s resources. Be an environmentalist.
  • ⚡ REAL-TIME ENERGY DATA: Connect SEM-Meter device via 2.4GHz WiFi to monitor energy usage, with an accuracy range of 1%. View usage in real time through Android/Apple software. Statistics of power usage in now/day/week/month/year format: the validity period of hourly exported data is 90 days, and the exported data of day/month/year data is permanent, available at any time Export from application.
  • ⚡ Super Privacy Mode ! run without our cloud ,without our app!! use your own MQTT server only!! run in LAN without internet access !!! (HomeAssistant with MQTT required.)
  • ⚡ SMART ELECTRICITY BILL ALLOCATION FOR RENTAL HOMES: Perfect for rental houses, shared apartments, and multi-room properties. With multiple circuit monitoring, you can track power usage for each bedroom, common area, or EV charger without installing multiple electricity meters. Supports customizable electricity rate templates including peak, off-peak, and holiday pricing, allowing automatic electricity cost calculation based on time-of-use tariffs. After setting the pricing template, users can clearly see electricity usage and cost for each room or circuit, making billing transparent and helping landlords or property managers manage fair electricity allocation.
Close-up view of the Smart Home Energy Monitor with 16 50A Circuit Level Sensors Real-Time Power Usage Electricity Cost Tracking Ideal for
Details

Materials and maintenance

dimensions
‎3.1 x 1.2 x 4.18 inches
weight
‎4.02 pounds
item_weight
4.02 pounds
product_dimensions
3.1 x 1.2 x 4.18 inches

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Customer reviews

162 reviewsPositive

Rated 4.4/5 across 162 reviews — well received overall.

  • 100% of sampled reviews are from verified purchases.
  • 67% of sampled reviews give 4–5 stars.

Customers say

Customers find the energy monitor easy to connect and wire, with accurate measurements and comprehensive app functionality.

Generated from the text of customer reviews

Reviews with images

Customer review image for Simple and excellent designCustomer review image for Simple and excellent design
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★★★★★

Perfect for a private home assistant setup

Very satisfied with this product! Excellent value for the price. I’ve been using it for a few months now together with Home Assistant, and it has worked flawlessly. As a European user, I found the documentation a bit US-oriented at first, so I had quite a few questions during setup. Their support team was outstanding — quick, detailed, and patient in answering all my concerns. Thanks to them, I now have a clear understanding of how everything works. They even sent me an extra part I needed for my European setup at no cost, which I really appreciated. My board has 28 circuits, but since circuits on the same phase can be combined, I was able to cover everything with the 16 clamps included. The measurements are very accurate — I compared them against some smart plugs with built-in power meters, and after several weeks of monitoring, the readings matched closely. Updating the firmware through the app was also a big plus. It allowed me to change the reporting interval from 30 seconds to just 2 seconds, giving me near real-time insight into my energy usage. I started out using their cloud integration with Home Assistant, but later switched to the private local setup. Everything now connects directly to Home Assistant without needing the internet — and the setup was much easier than I expected. Read more

Kevin D.Verified purchase
★★★★★

Great Product at An Awesome Price!

I've been using this for a while now. It's a great replacement for my old monitor with a lot of new features. Installation is easy and straight forward, the split current transfers make that very easy. The app works well and it's already set up for Home Assistant integration and the ability to use that as your server so no need to sed data out of your home. I had one small problem that tech support quickly and professionally took care of. I have 4 panels and lots of circuits to monitor so I will be buying several. Read more

DuaneVerified purchase
★★★★★

Simple and excellent design

This is great product and was very easy to setup and connect. I bought two as my panel is full. They combined and the 2nd ones large clamps even work as an additional input so I used them to monitor the feed to my shop. Within an hour of getting it all setup I found my power hungry circuit and resolved my excruciatingly high electric bill. The graphing works great too, you can graph individual circuits and zoom in and out on the per minute graphs. Couldn't be happier with these! Read more

Customer review image for Simple and excellent designCustomer review image for Simple and excellent design
T. G.Verified purchase
★★★★

Great Smart Energy Monitor with Minor Accuracy Quirks

This smart home energy monitor has been a fantastic addition to my setup. Installation was straightforward, the app is intuitive, and I love being able to see real-time energy usage for the whole house. It's really helped me become more mindful about what’s using the most power and when. That said, I did notice a small discrepancy when comparing it to my utility power meter—the readings are consistently off by a few percentage points. Not a huge deal for general monitoring, but if you're looking for ultra-precise data, it’s something to keep in mind. This meter is usually 20-50kwh under what the power company meter says im using. Again this is not a huge deal at all to some Overall, it's a solid product with powerful insights and great functionality. Just shy of perfect due to the slight inaccuracy, but still absolutely worth it for most homeowners. Read more

terrelljames91Verified purchase
★★★★★

Extremely good function and value power monitor

App gives lots of data you can use to save on your electric bill. Data is also available via mqtt for your home automation server so automatic action can be taken as you want. Installation requires some electrical skill but is easy for folks who have changed circuit breakers and have done some residential wiring. The app is apparently designed by engineers, no marketing bs at all. When there is a power failure, you may see wonky data on startup. A way to tailor the length of the sensor wires would help during installation. These are just two minor inconveniences given the value it brings. Very cost effective. Mine has been installed for 11 months, working great. Read more

Mike in DefianceVerified purchase
☆☆☆☆

not accurate and not easy to integrate with Home Assistant!

device is not reporting accurately values at all. tried working with their support but it did not result with any resolution but only emails going in circles exhausting. also very difficult to integrate with Home Assistant although it is listed as compatible with Home Assistant which makes you think it is simple plug and play - which is not. very disappointing. Read more

esalomoVerified purchase
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