--- product_id: 676503371 title: "Smart Home Energy Monitor with Open API, Home Assistant, No Cloud" price: "65108 som" currency: KGS in_stock: true reviews_count: 13 url: https://www.desertcart.kg/products/676503371-smart-home-energy-monitor-with-open-api-home-assistant-no store_origin: KG region: Kyrgyzstan --- # Maximize solar self-consumption automation ±1% accuracy real-time monitoring 100% local data privacy, no cloud Smart Home Energy Monitor with Open API, Home Assistant, No Cloud **Price:** 65108 som **Availability:** ✅ In Stock ## Summary > ⚡ Own your energy, own your future — smart, private, and powerful. ## Quick Answers - **What is this?** Smart Home Energy Monitor with Open API, Home Assistant, No Cloud - **How much does it cost?** 65108 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/676503371-smart-home-energy-monitor-with-open-api-home-assistant-no) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Solar Power Maximizer:** Automatically optimize surplus solar energy use to cut bills and reduce grid feed-in. - • **Precision Energy Insights:** Track voltage, current, and power with ±1% accuracy for smarter savings. - • **Privacy-First Local Control:** Access your data via built-in Web UI and Open API—no cloud, no compromises. - • **Circuit-Level Alerts & Control:** Set custom usage targets and get instant alerts to prevent energy waste. - • **Seamless Smart Home Integration:** Native Home Assistant & OpenClaw AI support for effortless automation. ## Overview The Refoss EM16P Smart Home Energy Monitor delivers ultra-precise, real-time energy data with ±1% accuracy, supporting up to 16 branch circuits and 2 main circuits. It ensures complete data privacy by operating fully locally without cloud dependency, featuring native Home Assistant integration and AI-driven OpenClaw automation. Designed for solar homes, it maximizes self-consumption by intelligently managing surplus power. ETL certified and easy to install with clamp-on sensors, it offers circuit-level control and alerts to optimize energy use and reduce bills by 10–20%, backed by a 2-year warranty. ## Description Refoss Smart Home Energy Monitor with Open API, Home Assistant, No Cloud | 16 60A Circuit Sensor, Real Time Electricity Usage Monitor, Power Consumption Meter, Solar Metering, ETL Certified, EM16P - desertcart.com Review: Worth every penny, but sixteen isn't enough - I love this. My only regret is that there's not one that can handle an entire panel with 42 breakers. If there was a bigger one, I would buy it instantly - great value. Especially once you realize that you have random energy usage spikes and use this to help diagnose it. I have this set up with home assistant and everything just works and flows perfectly into the energy dashboard. Getting it all set up both in the panel and on the wifi was a breeze. One note, if you connect the clip before plugging it in, make sure you don't touch the metal tip or you're in for a shock. Review: Works well with Home Assistant on VLAN after a few settings changes; voltage monitoring is strange - This is a Home Assistant specific review. If you are using the app and on a typical network, only #1 would be of interest. Overall it works great! It was easy to setup and integrate into home assistant. However there are a few things I did notice about it: 1. It has 3 sets of 6 channels and a voltage measurement for each. It does not work will if you have a single unit and want to measure an even number of circuits between 2 phases. (and by work I mean exact measurements. It will still be close) However I had 2 units so I was able to split the circuits and it worked out. For this I have to give it 4 stars as it does not easily support a typical split phase configuration. 2. It requires using their app and making an account for the initial setup and connection to wifi. The app will error out if your phone is on a different vlan than the wifi you selected but it still connects. 3. The unit requires internet access at least 1 time before working locally. 4. The home assistant integration that is officially supported automatically scans for devices and if it is on a different subnet, it will not be found. This can be solved by using the integration from HACS and entering an IP address. Overall I am happy with the device and that I do not need to flash custom firmware but still run it on an internet restricted VLAN with Home Assistant! ## Features - EM16P MODEL & LOCAL CONTROL & DATA PRIVACY: Access your home energy monitor data locally via Built-in Web UI, Open API, and MQTT without relying on cloud services. Unlike cloud-dependent monitors, Refoss ensures your data stays within your home network. Direct local access protects your privacy while giving you 100% full control of your home energy system. - NATIVE HOME ASSISTANT & OPENCLAW AI: Experience seamless Native Home Assistant integration right out of the box—no firmware flashing or complex coding required. Featuring ✨NEW✨ OpenClaw Support, it enables AI-driven automation for smarter, real-time energy management and seamless smart home control. - MAXIMIZE SOLAR & ZERO FEED-IN AUTOMATION: Designed for solar homes, the power monitor works with the Refoss app and Home Assistant to automatically use surplus solar power. Appliances like EV chargers, washing machines, and water heaters are powered during midday peaks, maximizing solar self-consumption and reducing low-value electricity feed-in to the grid. Optimizes usage and reduces bills. - REAL-TIME MONITORING & ±1% ACCURACY: Monitor voltage, current, active power, and power factor of major appliances. Provides ±1% accuracy (200A: 2–200A; 60A: 1–60A) and ±2% at low current. Daily data stored up to 5 years and exportable. With no subscriptions or hidden fees, you get deep historical insights to help you identify every energy-saving opportunity and save 10–20% on monthly bills. - SMART ALERTS & CIRCUIT-LEVEL CONTROL: Set usage targets for each individual circuit and receive instant alerts when appliances exceed normal consumption. Refoss app supports automation and peak management to optimize schedules, reduce peaks, and improve efficiency. Real-time electricity usage monitor for circuit-level insights. - ETL CERTIFIED & NON-INVASIVE INSTALLATION: ETL certified and compliant with UL 61010 safety standards for safe installation and operation. Supports 2 main circuit sensors (2–200A each) and 16 branch sensors (1–60A each) with easy clamp-on installation. Fits most home circuit panels and includes a 2-year warranty with responsive support for reliable long-term monitoring. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DJNV3GPR | | Best Sellers Rank | #79,092 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Home Automation Modules | | Color | Orange+White | | Customer Reviews | 4.2 4.2 out of 5 stars (182) | | Date First Available | October 31, 2024 | | 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 | | Item Package Quantity | 1 | | Item Weight | 4.24 pounds | | Item model number | EM16 | | Manufacturer | Refoss | | Part Number | EM16P | | Product Dimensions | 4.5 x 3.5 x 1.1 inches | ## Images ![Smart Home Energy Monitor with Open API, Home Assistant, No Cloud - Image 1](https://m.media-amazon.com/images/I/71BkferqpzL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Does the Refoss EM16P work without Home Assistant?** A: Yes, it works standalone with its own app for real-time circuit data, history, and solar monitoring. Home Assistant integration is optional but adds automations, custom dashboards, long-term logging, and circuit-level triggers. **Q: Why is my electricity bill so high?** A: Appliances like refrigerators, dryers, or EV chargers quietly use a lot of power. This smart power tracker monitors real-time usage per circuit, helping identify high-energy devices and reduce electricity costs by 10–20%. **Q: I don’t want my energy data sent to the cloud. Is it safe?** A: Yes. All data stays local. Access and manage it via Web UI or local API—no cloud, full control, and easy integration for smart home or automation setups. **Q: Am I wasting solar energy?** A: Excess solar power often goes unused. A solar power optimizer tracks solar production and automatically directs surplus energy to appliances such as heat pumps or dishwashers, boosting self-consumption and reducing electricity costs. **Q: How can I spot energy-hungry or faulty appliances?** A: The fastest way to get an ROI is eliminating Vampire Loads — devices that draw power even when “off.” Refoss alerts you to unusual or peak consumption so you can fix them before they drive up costs. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worth every penny, but sixteen isn't enough *by T***R on August 29, 2026* I love this. My only regret is that there's not one that can handle an entire panel with 42 breakers. If there was a bigger one, I would buy it instantly - great value. Especially once you realize that you have random energy usage spikes and use this to help diagnose it. I have this set up with home assistant and everything just works and flows perfectly into the energy dashboard. Getting it all set up both in the panel and on the wifi was a breeze. One note, if you connect the clip before plugging it in, make sure you don't touch the metal tip or you're in for a shock. ### ⭐⭐⭐⭐ Works well with Home Assistant on VLAN after a few settings changes; voltage monitoring is strange *by E***N on November 19, 2025* This is a Home Assistant specific review. If you are using the app and on a typical network, only #1 would be of interest. Overall it works great! It was easy to setup and integrate into home assistant. However there are a few things I did notice about it: 1. It has 3 sets of 6 channels and a voltage measurement for each. It does not work will if you have a single unit and want to measure an even number of circuits between 2 phases. (and by work I mean exact measurements. It will still be close) However I had 2 units so I was able to split the circuits and it worked out. For this I have to give it 4 stars as it does not easily support a typical split phase configuration. 2. It requires using their app and making an account for the initial setup and connection to wifi. The app will error out if your phone is on a different vlan than the wifi you selected but it still connects. 3. The unit requires internet access at least 1 time before working locally. 4. The home assistant integration that is officially supported automatically scans for devices and if it is on a different subnet, it will not be found. This can be solved by using the integration from HACS and entering an IP address. Overall I am happy with the device and that I do not need to flash custom firmware but still run it on an internet restricted VLAN with Home Assistant! ### ⭐⭐⭐⭐⭐ Great Whole-Home Energy Monitor with Home Assistant Support! *by S***E on September 8, 2025* 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. ## Frequently Bought Together - 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 - Upgraded Watt Power Meter Plug Home Electrical Usage Monitor Consumption, Energy Voltage Amps Kill Tester with Backlight, Overload Protection, 7 Modes Display --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kg/products/676503371-smart-home-energy-monitor-with-open-api-home-assistant-no](https://www.desertcart.kg/products/676503371-smart-home-energy-monitor-with-open-api-home-assistant-no) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-09-27*