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Refoss Smart Home Energy Monitor, Native Open API & Web UI (No Cloud Required), Real Time Electricity Usage Monitor, Power Consumption Meter Works with Home Assistant & MQTT, Solar Net Metering, ETL

Original price was: 311.99 $.Current price is: 259.99 $.

  • 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.

Shipping & Delivery

  • Courier delivery

Our courier will deliver to the specified address

2-3 Days

From $20

  • DHL Courier delivery

DHL courier will deliver to the specified address

2-3 Days

From $40

  • Warranty 1 year
  • Free 30-Day returns

Specification

Overview

Weight1.937 kg
Dimensions11.43 × 8.84 × 2.79 cm

Processor

Weight1.937 kg
Dimensions11.43 × 8.84 × 2.79 cm

Display

Weight1.937 kg
Dimensions11.43 × 8.84 × 2.79 cm

RAM

Weight1.937 kg
Dimensions11.43 × 8.84 × 2.79 cm

Storage

Weight1.937 kg
Dimensions11.43 × 8.84 × 2.79 cm

Video Card

Weight1.937 kg
Dimensions11.43 × 8.84 × 2.79 cm

Connectivity

Weight1.937 kg
Dimensions11.43 × 8.84 × 2.79 cm

Features

Weight1.937 kg
Dimensions11.43 × 8.84 × 2.79 cm

Battery

Weight1.937 kg
Dimensions11.43 × 8.84 × 2.79 cm

General

Weight1.937 kg
Dimensions11.43 × 8.84 × 2.79 cm

Description


From the brand


Product description

whole home electricity monitor

See whole-home power in one clear system. Without this granularity, you are guessing. You might know your bill is high, but you won’t know that an aging garage refrigerator is drawing excessive power 24/7, or that a “vampire load” is adding $10 to your bill every month while devices are “off.”

  • 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.

  • 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%.

  • 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.

  • 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.

  • 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.

Technical Specifications

Channels 2 main circuits (Max. 200 A) + 16 branch circuits (up to 60 A per branch)
Accuracy 200A CT: ±1% (2–200A), ±2% (1–2A), ±5% (0–1A); 60A CT: ±1% (1–60A), ±2% (0–1A)
Local Storage Minute-level data, up to 7 days
Cloud Storage Daily: up to 5 years; Hourly: up to 2 years; Minute: up to 2 months
Data Export Free data export via Refoss cloud
Open API Supports MQTT, HTTP, JSON-RPC, WebSocket & Webhooks for seamless device integration
Home Assistant Smart home automation, solar management, and EV charging with Home Assistant
Refoss App App supports automation rules, channel merging, CT inversion, peak demand
Solar Solar PV monitoring & net metering support
Measurements Voltage, Current, Active & Reactive Power, Energy, Power Factor
Connectivity 2.4 GHz Wi‑Fi + Bluetooth for setup and communication
System Compatibility Single-phase, 2-wire; Single-split phase, 3-wire; 3-phase, 4-wire Wye systems with earthed neutral (TN or TT, no Delta)
Antenna High-gain external antenna for stronger Wi-Fi reception
Processor High-performance ESP32-D0WDR2-V3 CPU, 100–240V~, 50/60Hz
After-sales Service Lifetime
Safety ETL Certified, UL 61010, FCC, IC, RoHS, CPF


Product description

whole home electricity monitor

See whole-home power in one clear system. Without this granularity, you are guessing. You might know your bill is high, but you won’t know that an aging garage refrigerator is drawing excessive power 24/7, or that a “vampire load” is adding $10 to your bill every month while devices are “off.”

  • 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.

  • 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%.

  • 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.

  • 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.

  • 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.

Technical Specifications

Channels 2 main circuits (Max. 200 A) + 16 branch circuits (up to 60 A per branch)
Accuracy 200A CT: ±1% (2–200A), ±2% (1–2A), ±5% (0–1A); 60A CT: ±1% (1–60A), ±2% (0–1A)
Local Storage Minute-level data, up to 7 days
Cloud Storage Daily: up to 5 years; Hourly: up to 2 years; Minute: up to 2 months
Data Export Free data export via Refoss cloud
Open API Supports MQTT, HTTP, JSON-RPC, WebSocket & Webhooks for seamless device integration
Home Assistant Smart home automation, solar management, and EV charging with Home Assistant
Refoss App App supports automation rules, channel merging, CT inversion, peak demand
Solar Solar PV monitoring & net metering support
Measurements Voltage, Current, Active & Reactive Power, Energy, Power Factor
Connectivity 2.4 GHz Wi‑Fi + Bluetooth for setup and communication
System Compatibility Single-phase, 2-wire; Single-split phase, 3-wire; 3-phase, 4-wire Wye systems with earthed neutral (TN or TT, no Delta)
Antenna High-gain external antenna for stronger Wi-Fi reception
Processor High-performance ESP32-D0WDR2-V3 CPU, 100–240V~, 50/60Hz
After-sales Service Lifetime
Safety ETL Certified, UL 61010, FCC, IC, RoHS, CPF

whole home electricity monitor

See whole-home power in one clear system. Without this granularity, you are guessing. You might know your bill is high, but you won’t know that an aging garage refrigerator is drawing excessive power 24/7, or that a “vampire load” is adding $10 to your bill every month while devices are “off.”

  • 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.

  • 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%.

  • 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.

  • 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.

  • 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.

Technical Specifications

Channels 2 main circuits (Max. 200 A) + 16 branch circuits (up to 60 A per branch)
Accuracy 200A CT: ±1% (2–200A), ±2% (1–2A), ±5% (0–1A); 60A CT: ±1% (1–60A), ±2% (0–1A)
Local Storage Minute-level data, up to 7 days
Cloud Storage Daily: up to 5 years; Hourly: up to 2 years; Minute: up to 2 months
Data Export Free data export via Refoss cloud
Open API Supports MQTT, HTTP, JSON-RPC, WebSocket & Webhooks for seamless device integration
Home Assistant Smart home automation, solar management, and EV charging with Home Assistant
Refoss App App supports automation rules, channel merging, CT inversion, peak demand
Solar Solar PV monitoring & net metering support
Measurements Voltage, Current, Active & Reactive Power, Energy, Power Factor
Connectivity 2.4 GHz Wi‑Fi + Bluetooth for setup and communication
System Compatibility Single-phase, 2-wire; Single-split phase, 3-wire; 3-phase, 4-wire Wye systems with earthed neutral (TN or TT, no Delta)
Antenna High-gain external antenna for stronger Wi-Fi reception
Processor High-performance ESP32-D0WDR2-V3 CPU, 100–240V~, 50/60Hz
After-sales Service Lifetime
Safety ETL Certified, UL 61010, FCC, IC, RoHS, CPF

Specifications

Manufacturer ‎Refoss
Part Number ‎EM16
Item Weight ‎4.27 pounds
Product Dimensions ‎4.5 x 3.48 x 1.1 inches
Item model number ‎EM16
Color ‎Orange+White
Item Package Quantity ‎1
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
Batteries Included? ‎No
Batteries Required? ‎No
ASIN B0DJNV3GPR
Customer Reviews 4.4 4.4 out of 5 stars (215) var dpAcrHasRegisteredArcLinkClickAction; P.when('A', 'ready').execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( 'acrLink-click-metrics', 'click', { "allowLinkDefault": true }, function (event) { if (window.ue) { ue.count("acrLinkClickCount", (ue.count("acrLinkClickCount") || 0) + 1); } } ); } }); P.when('A', 'cf').execute(function(A) { A.declarative('acrStarsLink-click-metrics', 'click', { "allowLinkDefault" : true }, function(event){ if(window.ue) { ue.count("acrStarsLinkWithPopoverClickCount", (ue.count("acrStarsLinkWithPopoverClickCount") || 0) + 1); } }); }); 4.4 out of 5 stars
Best Sellers Rank #40,674 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #4 in Home Automation Modules
Date First Available October 31, 2024

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