Refoss スマートホームエネルギーモニター、ホームアシスタントによる正確なリアルタイムエネルギー消費トラッキング、16X回路センサー付き電気使用量モニター

I have been trying out the Refoss EM16 Smart Energy Monitor for a while now, and I must say, I'm impressed. It was easy to install—good instructions and helpful online videos meant the whole process was simple and quick. Took about an hour to have everything up and running, and all plugged in to the Refoss app successfully. I like best that this product is so versatile and thoughtful in design. You can just plan and label your circuits ahead of time, and if a clamp is showing up in the negative direction, you can simply reverse it in the app without the need to rewire. If you require additional circuits to be monitored, you can bus their wires together into a CT so long as they're on the same phase. The application is simple to operate, giving real-time monitoring of all the circuits, and detailed energy history by day, week, month, or year. Home Assistant support is where this product really shines. EM16 auto-commands and provides complete local access to all the data of each circuit, enabling advanced automation without the cloud. Solar system owners will love Zero Feed-In Automation—putting extra solar energy to use powering devices such as EV charging points or water heaters rather than returning it to the grid. The recent firmware releases saw the addition of various useful features, including channel merging, export of CSV data, improved dashboards, and inverting CT readings in software. The releases show that Refoss is refining the product according to feedback from users. Overall, the EM16 is a wonderful, budget-friendly energy monitoring system—easy to install, full of data, and ideal for smart home residents as well as anyone wishing to gain better control of and track their home energy usage. Highly recommended.

I’ve been using the Refoss Smart Energy Monitor for a week now, and I’m thoroughly impressed. One of the standout features is its local integration with Home Assistant, which is precisely why I chose this energy monitor. The instructions were straightforward, and the video on the Amazon listing was particularly helpful, guiding me through the entire installation process. It should be relatively easy for anyone with basic electrical knowledge and some handy skills. However, I recommend doing some pre-planning before installation to determine which circuits you want to monitor. There are five L1 circuit sensor, five L2 circuits sensor, and six circuits sensor that can be used on either L1 or L2. You’ll need to choose one or the other. Additionally, you can combine some circuits and use one clamp for them, as long as they don’t exceed the current limit of the circuit sensor. For instance, I combined two kitchen outlets into one, saving me a sensor I used for monitoring a different. For balanced 240V loads like an AC unit or an EV charger, you can use one clamp and then change the circuit factor to 2 in the Refoss app or create a helper in Home Assistant that multiplies the energy usage by 2. This is because with balanced loads, the energy drawn on both lines is the same, which is why it’s called a balanced load. This way, you can save a sensor to monitor another circuit. I highly recommend making a note of which sensors are connected to which circuits to avoid wasting time trying to remember where you connected them. Setting up the energy monitor on the app was a breeze. I simply downloaded the Refoss app, followed its instructions to connect it to Wi-Fi, and updated the software of the energy monitoring module. The Refoss app allows you to monitor live energy usage for each connected circuit and view a history of energy usage for each circuit, broken down by day, week, month, and year which is awesome for using the app on its own. Connecting to Home Assistant was equally easy. I searched for the Refoss add-on, and the energy monitor was automatically detected on my network. It brought over all the entities shown in the Refoss app and then I got to setting up everything in home assistant. Overall, I highly recommend this affordable and reliable whole-house energy monitoring system. If you use Home Assistant, this is one of the best options out there that is supported natively through the Refoss addon.

Overall a good product after monitoring for a few hours. The app could be more user friendly and organized a bit better. Like some others have said some sensors are wired backwards and will give you a negative value even if installed correctly but is easily overcome with the circuit factor. About half of mine were wired incorrectly. I wish the pig tails were a bit longer to give more options on where to mount the receiver but overall installation was very easy. So far so good, the product is giving me lots of information about energy consumption like it was designed to do. Would recommend

When I received this product, I was initially impressed by how solid it felt in my hand. It is heavy and feels extremely well-made. The provided instruction manual was intuitive and written in perfect English (based on experience, this is a HUGE plus). After cutting the main breaker that feeds my electrical panel, I was able to remove the panel cover and install the device in under an hour. I initially had a little trouble routing the wi-fi antenna, but finally decided to let it hang from the bottom of my box. In an installation with a surface-mounted panel, this would be much easier. My only issue with the installation was cosmetic. The wires running from the clamps to the device's brain use molded plugs and cannot be adjusted for length. It would be a neater installation if these cable lengths could be customized, but I consider this nitpicking, and it did not change my initial rating of the product. Since I had already installed the Refoss garage door controller at the house, I already had the application on my iPhone. Adding the power monitor was as easy as hitting the "+" in the app to add it to the dashboard. After a little configuration of my circuits, so that 240-volt breakers appeared as a single device, the installation was complete. The app was now showing me the power consumption of my monitored circuits in real-time. While the device works exactly as designed, and the installation went flawlessly, the app could provide me with clearer information. The real miss in the application is the inability to rename (or even add footnotes) to the circuits. If they could add this ability, it would make a huge difference. You should also be able to arrange the circuits in a custom order so that my mains could appear at the top of the app rather than being listed in alphabetical order. All in all, this is a great little device that will provide me with excellent insight into my power consumption at home, enabling me to make informed decisions about sizing a solar system in the future. It will also show me where I can reduce power usage when I need to look at installing an emergency generator.

Have this product managing power usage in out house along with the Homeassistant management software. It took about 2 hours to plan out and install. While I was comfortable doing the work myself as an electrical engineer. I wouldn't recommend it for most DIY folks unless they are able to completely disconnect their main outside the house before the breaker box. Wifi connection worked great. VLAN automatically setup with no issues. Size was good for my breaker box, not sure if it would be as easy for an older or smaller box. Two issues I had, the install is a total mess of wires... it wasn't that easy to clean up. Wish there was a way to integrate current monitors into the breakers themselves. Second issue is the current readings were ALL backwards, despite following the directions to a T. Fortunately you can toggle this by adjusting your multiple from positive to negative in the app. Unfortunately thats annoying to do because of some android bugs making it hard to type "-" in their app? Look is ok if you don't mind the rats nest of orange wires in your breakerbox. Cost seems appropriate given the components included. Just wish they included another 5-10 breakouts to cover a full box, or at least the capacity to add them from an expansion kit. Kit should be durable and last for years with no major moving parts. Curious to see how well the plastic clips hold out over the years if I have to move it ever...