Smart Home Energy Monitor Supports Home Assistant, Real-Time Accurate Energy Consumption Tracking, Electricity Usage Monitor with 16x60A Circuit Sensors, 36-Month History, Solar Metering, 2.4G
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This item is eligible for return within 30 days of receipt
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Availability:
In Stock.
Arrives
Saturday, Jul 12
Features
- NEWFeature Release (25.01): On the Device Settings -> Circuit Factor page, you can now invert the readings directly through the settings, eliminating the need to physically flip the current transformer. (Requires updating to the latest version of the Refoss app and firmware.)
- Refoss Smart Home Energy Monitor: Supports 2 main circuit sensors (up to 200A each) and 16 branch circuit sensors (up to 60A each) with an easy-to-install clamp-on design. Compatible with single-phase 2-wire systems, single-split phase 3-wire systems, and 3-phase 4-wire Wye systems with earthed (TN or TT) neutral (no Delta). Easily installs in most home circuit panels and includes a 2-year warranty. Attention: Take care in accessing the included current transformer and avoid bumping it to prevent damage.
- 24/7 Energy Monitoring: With the Refoss app, you can track your homes energy usage anytime, anywhere. Easily monitor the power, current, voltage, and power factor of major appliances like air conditioners, stoves, and water heaters. Quickly identify which devices are running efficiently and which ones might be wasting electricity. According to statistics, many users save an average of 10%-20% on their energy bills by optimizing appliance usage.
- Compatible with Home Assistant: EM16 Wi-Fi Energy Monitor is now compatible with Home Assistant! Simply update the firmware in the Refoss app to seamlessly integrate your energy management system with your smart home platform, enabling centralized control and automation. Additionally, all data is stored locally, ensuring your privacy is protected without cloud processing. API is not supported.
- Comprehensive Energy Data: The power monitor provides 98% accuracy and stores up to 3 years of detailed electricity usage data. With clear minute, hour, day, month, and year consumption and cost charts, you can easily understand your energy use. Ideal for homeowners adjusting appliance usage to save on bills or businesses tracking long-term energy savings and emission reductions. Historical data can also be exported for further analysis, making every electricity expense transparent.
- Smart Consumption Alerts: You can set personalized usage targets for each circuit. Once the system detects an unusual energy spikesuch as a sudden increase in power consumption by an appliance that exceeds the normal rangeyou will immediately receive a detailed alert notification. This allows you to take prompt action, such as checking if there is a malfunction with the device or adjusting your usage habits, thereby optimizing appliance usage across different times of the day.
- Cut Electricity Costs and Maximize Efficiency: The energy meter accurately monitors solar panel and wind turbine energy generation, providing real-time data on power output. This allows you to optimize the use of renewable energy, enhance energy efficiency, and reduce electricity bills with ease.
Manufacturer: Refoss
Part Number: EM16
Item Weight: 4.22 pounds
Product Dimensions: 4.5 x 3.48 x 1.1 inches
Country of Origin: China
Item model number: EM16
Color: Orange+White
Item Package Quantity: 1
Included Components: Home Energy Monitor, WiFi Antenna Assembly, 200A Current Transformers x 2, 60A Current Transformers x 16, 3.5mm Insulation Plugs x 2, 2.5mm Insulation Plugs x 16, Wire Nuts x 3, Extra Wires x 3, Wire Harness, User Manual
Batteries Included?: No
Batteries Required?: No
Date First Available: October 31, 2024
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Jul 12
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Color: Orange+White
This monitor is great! I wanted to monitor the current of several large appliances that I could not monitor with just smart energy monitor plugs. I also did not want to accidentally turn off the power to something like the refrigerator, as is typical with smart plugs having the ability to turn the plug on/off. Being able to monitor the current consumption and peak amps of a larger appliance allows me to gain possible insights into the health of the appliance. The installation was straight forward with no need to pull the wire out of each breaker, because the Circuit Transformers (CTs) unclip to open up and clamp loosely around the insulated wire and then each CT easily plugs into headphone-jack-style ports on the hub that sits inside the panel. The em16 includes 2 main CTs, each rated at 200 amps that are installed onto the main feeds coming into the electrical panel, and 16 individual Circuit Transformers, individually rated at up to 60 amps to monitor up to 16 individual circuits. Keep in mind that for any appliance that has 2 hots going to the appliance, this will require a CT for each wire to be more accurate, or in some cases, you may want to use a power factor of “2” and only use 1 CT – if the power to both phases are very similar, like an electric heating element. The only real issue that I had was when I assumed the size of the knockout on my exterior electrical panel would be the same size as the rubber pass-though grommet included on the WiFi antenna, it looked really close! People have mentioned in Amazon reviews that the instructions were incorrect when they installed the Smart Energy Meter and see negative readings showing up in the app, but this is due to incorrect installation. I highly recommend testing during the install process to make sure you install the CTs onto the correct phase and correct orientation. I think the directions could be clarified slightly for this reason, also an app update will bring the ability to swap each CT from negative to positive, without having to reinstall each CT if you mess up. The setup of the app was quick and straight forward, automatically finding the device when I opened the Refoss app and then a firmware update that took about 5 minutes. I already had Meross installed on my Home Assistant instance and HA prompted that a new device had been found and I clicked “Add”. Each of the circuits in the app are named something like A1, A2, A3…. B1, B2, etc. but you can rename them easily by clicking on the hamburger button (three lines in the top right of the app) to open up the device settings, then click on the first option, “Device name”, then tap the circuit that you want to include a unique name after the circuit identifier to change the name from “A3-A3” to something like “A3-Water Heater”. How I Chose What Circuits to Monitor in our Electrical Panel: For me, I saved 2 CTs to monitor the 2-phase power coming from our emergency generator. Next, my priority was to monitor our large or power hungry appliances, and then with whatever CTs I had left over, I could monitor a few smaller circuits with wall plugs or lights. I've already created Home Assistant automations around the water heater, dishwasher, clothes washer and clothes dryer circuit sensors, and an automation if the stove/oven is accidentally left on.
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Reviewed in the United States on January 27, 2025 by Team7 Team7
Color: Orange+White
EM-16 is a good product. Wired it in just fine, even in my tight panel space. Experienced the same issues as others, where the CT readings are backwards, I reversed them in the App. The App didn't make this obvious at first, there is more information in the sales and review info than in the manual. I just waited until all16 circuits reported, and then the negative channels I reversed with the correction factor in the App. My App wish list things are : 1- Need a time value added to the consumption limits. Right now you can set a max kW limit, but eventually everything will reach that Max. The time value would reset the accumulated value to zero, at users setting such as, 1 hour , 24 hour, ect. This would monitor something left on or running better than current configuration. 2- It would be nice if the App could sum the values of Main A and B, this would reflect your typical providers meter for kW usage. That being 240 volt A-B phase with a neutral. Overall enjoying the energy monitor.
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Reviewed in the United States on April 6, 2025 by M. G.
Color: Orange+White
I decided to replace another model that was having WiFi issues with this new one. This one was able to read twice as many and is more accurate than the version 1 of the other model I was using. My system is a two phase, three wire 200 Amp. Install was as expected. I have a flush mount box and my mains run in at the bottom unlike most that come in at the top, so extra caution was needed. Since it was flush I just bend the cover panel a little to run the antenna wire to the top. This almost fit on top for me, but I needed a little more room so I did knock out a section in the box to fit the power cable up into the whole. The clamps are a little smaller than my last one I was using, and that was a good thing. I compared measurement to the history of the other system and my fluke clamp and it was very accurate. It has voltage since wires to measure each main leg for better accuracy if you panel might be slightly imbalanced. When changing the multiplayer in the app for a single clamp on a double pole 240 breaker it will only show double the wattage over all being measured, the amperage and voltage still show singular. I have mentioned this to the company and believe they might be correcting this in the app. But in the end, it’s the over all wattage that I want to see anyway. TIP: Plan ahead, read the instructions on how the clamps get installed since they correspond with the voltage sense wires. The small clamps can measure 60 Amps so you can use just one on a 240 double pole breaker and multiply the wattage in the app changing it from 1 to 2. Plan it out before the install as you can see I did in the one picture with the old system still installed. Make sure the arrow is pointing to the breaker when installing the clamps also so it doesn’t read it backwards. Remember the lugs under the main break are still I’ve and take all needed safety precautions. If you dont feel conformable installing something like this then have an electrician do it.
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Reviewed in the United States on January 28, 2025 by Scott D Scott D