Smart Home Energy Monitor with 8 50A Circuit Level Sensors, Measure Power Usage in Real-Time, History with App (8 50A Circuit Level Sensors) – Compatible with Home Assistant

Original price was: $129.99.Current price is: $21.99.

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Committed to bringing the best value as affordable possible, the SEM-Meter provides everything you need to monitor your entire home’s energy usage in real time. See how much electricity your home is using anywhere, anytime.
Product Dimensions ‏ : ‎ 4.18 x 3.1 x 1.2 inches; 2.8 Pounds
Item model number ‏ : ‎ SEM-Meter
Date First Available ‏ : ‎ April 21, 2025
Manufacturer ‏ : ‎ Fusion Energy
ASIN ‏ : ‎ B0F5Q9Q4SX
Best Sellers Rank: #71,680 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #13 in Home Automation Modules
Customer Reviews: 4.4 4.4 out of 5 stars 127 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
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 8 50A sensors to accurately monitor your air conditioner, furnace, water heater, washer, dryer, range, etc. Add up to eight more sensors.
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 !!!

Reviews

6 reviews for Smart Home Energy Monitor with 8 50A Circuit Level Sensors, Measure Power Usage in Real-Time, History with App (8 50A Circuit Level Sensors) – Compatible with Home Assistant

  1. Duane

    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.

  2. Kevin D.

    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.

  3. Mike in Defiance

    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.

  4. terrelljames91

    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 someOverall, 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.

  5. Kelly B

    Works great with Home Assistant
    This is a great device so far. It works as a stand alone device but also integrates with Home Assistant. The app has a Home Assistant section where you can enter your local MQTT server. Note: it took a few hours for the Home Assistant option to appear in the app.The Home Assistant community members made this very easy to get up and running. I don’t know if links are allowed so search the Home Assistant community for “Smart Home Energy Monitor by Fusion Energy” if you need help getting it set up. King199 has posted a yaml file (post #85) that you can copy paste to your configuration.yaml file. Then just edit the names to get it working.Also, as of now, the updates to Home Assistant via MQTT are every 30 seconds. You can email support and they can push a firmware update that will send updates every 2 seconds.

  6. Petef

    This item on works on a 2g network.

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