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Previous page Next page 1 Cut Energy Waste Now 2 Real-Time Monitoring 3 Low Bills, Fast Payback 4 Preventive Monitoring 5 Solar Power, Zero Waste “Didn’t Know That Was Wasting So Much!” – More Real User Findings Effortlessly track your pool heater's power, current, voltage, and power factor – identify wasteful $42/month leaks & optimize EV charger peak-hour usage. Solar covered 87% of home's power this month, saving the equivalent of 2.3 adult pine trees. Open the Refoss app, swipe through the screens, and compare your Easter oven costs with your usual daily usage. I discovered that on Easter, my oven used 50% more energy than usual, adding about $15 to my bill. Bedroom fan runs all night in summer, silently adding $20/month to your bill. Use HA automation to schedule shutoff while you sleep. I set everything up in about 1–2 hours with just basic tools. The installation guide was super clear, and support was quick to respond when I had a small question. Refoss EM16 Energy Monitor: Reliable, Accurate, Always Here for You. Previous page 3-Year Cloud History + 2-Year Support Refoss's free cloud service stores up to 3 years of historical consumption data. Backed by 2-year full support with 24/7 support for instant troubleshooting. Visualize Energy Like Checking Weather With real-time consumption data, clear visual charts, and easy export options, easily track and optimize your energy habits over time. Next page Super Privacy Mode: All Data Processed Locally! Previous page Next page After integrating with Home Assistant, the EM16 runs entirely locally, without relying on our cloud or app, ensuring your data remains private and secure. Previous page Energy Monitor Size Circuit Sensor Size Accessories List Next page Technical Specifications Power Supply 100-240V~, 50/60Hz Channels 2 main circuits(Max.200A), 16 branch circuits(Max.60A) Invert Readings Instantly Easily invert circuit readings without flipping the current transformer (requires app and firmware update) Bluetooth Setup Yes Antenna A high-gain antenna can be positioned outside the switch-board Network 2.4G Only. Supports local LAN discovery of devices, does not support setting fixed ip for the time being. Operating Temperature 0°C to 40°C Supported System Single-phase, 2-wire systems, Single-split phase, 3-wire systems, 3-phase, 4-wire Wye systems with earthed (TN or TT) neutral (no-Delta) System Requirement Smartphone with iOS 13 or above or Android 8.0 or higher, Bluetooth 4.0 or later Safety FCC, IC
✨NEW✨Feature 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 home’s 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.
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 spike—such as a sudden increase in power consumption by an appliance that exceeds the normal range—you 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.