--- product_id: 676503371 title: "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" brand: "refoss" price: "€ 429.89" currency: EUR in_stock: true category: "Refoss" url: https://www.desertcart.com.cy/products/676503371-refoss-smart-home-energy-monitor-with-open-api-home-assistant store_origin: CY region: Cyprus --- # ±1% accuracy real-time monitoring Local Web UI & Open API - no cloud Solar net metering & auto load control 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 **Brand:** refoss **Price:** € 429.89 **Availability:** ✅ In Stock ## Summary > ⚡ Own Your Energy, Outsmart Your Bills — Privacy-First Smart Monitoring ## Quick Answers - **What is this?** 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 by refoss - **How much does it cost?** € 429.89 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/676503371-refoss-smart-home-energy-monitor-with-open-api-home-assistant) ## Best For - refoss enthusiasts ## Why This Product - Trusted refoss brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Total Local Control, Zero Cloud Dependency:** Keep your energy data private and accessible anytime via built-in Web UI, Open API, and MQTT—no internet needed. - • **Maximize Solar Self-Consumption & Slash Bills:** Automatically power high-usage appliances with surplus solar energy, reducing grid feed-in and cutting monthly costs by up to 20%. - • **Plug & Play Native Home Assistant Integration:** Seamlessly connect with Home Assistant and OpenClaw AI for smart, automated energy management without coding hassle. - • **Safe, Easy Installation with ETL Certification:** Non-invasive clamp-on sensors fit most panels, backed by UL safety standards and a 2-year warranty for peace of mind. - • **Precision Monitoring with Circuit-Level Insights:** Track voltage, current, and power factor with ±1% accuracy, storing 5 years of data to uncover every saving opportunity. ## Overview The Refoss Smart Home Energy Monitor offers professional-grade, real-time electricity usage tracking with ±1% accuracy, native Home Assistant and MQTT integration, and local data access via a built-in Web UI and Open API—eliminating cloud dependency. Designed for solar homes, it automates surplus solar power usage to maximize savings and reduce grid feed-in. ETL certified with easy clamp-on installation, it supports up to 18 circuits and stores 5 years of historical data, empowering users to optimize energy consumption securely and efficiently. ## 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 ## 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 even during internet outages. - 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 | #19,969 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Home Automation Modules | | Color | Orange+White | | Customer Reviews | 4.3 4.3 out of 5 stars (224) | | 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 ![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 - Image 1](https://m.media-amazon.com/images/I/71BkferqpzL.jpg) ![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 - Image 2](https://m.media-amazon.com/images/I/61ByKmF97yL.jpg) ![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 - Image 3](https://m.media-amazon.com/images/I/61N9f+9NmXL.jpg) ![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 - Image 4](https://m.media-amazon.com/images/I/61S0alPqj0L.jpg) ![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 - Image 5](https://m.media-amazon.com/images/I/71wNL4ccpdL.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. ## 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.com.cy/products/676503371-refoss-smart-home-energy-monitor-with-open-api-home-assistant](https://www.desertcart.com.cy/products/676503371-refoss-smart-home-energy-monitor-with-open-api-home-assistant) --- *Product available on Desertcart Cyprus* *Store origin: CY* *Last updated: 2026-08-02*