--- product_id: 676503371 title: "Smart Home Energy Monitor with Open API, Home Assistant, No Cloud" brand: "refoss" price: "S$399" currency: SGD in_stock: true category: "Refoss" url: https://www.desertcart.sg/products/676503371-smart-home-energy-monitor-with-open-api-home-assistant-no store_origin: SG region: Singapore --- # ±1% accuracy real-time monitoring Solar optimization with zero feed-in automation Local data access, no cloud, full privacy Smart Home Energy Monitor with Open API, Home Assistant, No Cloud **Brand:** refoss **Price:** S$399 **Availability:** ✅ In Stock ## Summary > 🔋 Own Your Energy: Smarter, Safer, Solar-Ready Monitoring ## Quick Answers - **What is this?** Smart Home Energy Monitor with Open API, Home Assistant, No Cloud by refoss - **How much does it cost?** S$399 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/676503371-smart-home-energy-monitor-with-open-api-home-assistant-no) ## 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 - • **Maximize Solar Savings:** Automatically power appliances with surplus solar energy to slash your electricity bills. - • **Precision Power Insights:** Track voltage, current, and power with ±1% accuracy for every circuit. - • **Privacy-First Monitoring:** Access your energy data locally via Open API and MQTT—no cloud, no compromises. - • **Circuit-Level Alerts & Control:** Set custom usage targets and get instant notifications to optimize energy consumption. - • **Seamless Smart Home Integration:** Native Home Assistant support plus AI-driven OpenClaw automation out of the box. ## Overview The Refoss EM16P Smart Home Energy Monitor delivers ultra-precise, real-time electricity usage data with ±1% accuracy across 16 circuits and 2 main sensors. Designed for privacy-conscious users, it offers local data access without cloud dependency, ensuring your energy data stays secure. With native Home Assistant integration and AI-powered OpenClaw support, it enables effortless smart home automation. Perfect for solar homes, it maximizes self-consumption by automating appliance usage during peak solar production. ETL certified and easy to install, the EM16P empowers you to reduce energy waste and cut monthly bills by 10–20%. ## 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 | #61,748 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8 in Home Automation Modules | | Color | Orange+White | | Customer Reviews | 4.3 4.3 out of 5 stars (226) | | 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. ## 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.sg/products/676503371-smart-home-energy-monitor-with-open-api-home-assistant-no](https://www.desertcart.sg/products/676503371-smart-home-energy-monitor-with-open-api-home-assistant-no) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-08-14*