Does the Refoss EM16P work without Home Assistant?

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.

Why is my electricity bill so high?

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%.

I don’t want my energy data sent to the cloud. Is it safe?

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.

Am I wasting solar energy?

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.

How can I spot energy-hungry or faulty appliances?

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.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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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

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

Product ID: 676503371

⚡±1% accuracy real-time monitoring

📡Local Web UI & Open API - no cloud

🔋Solar net metering & auto load control

¥63790

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Description

⚡ Own Your Energy, Outsmart Your Bills — Privacy-First Smart Monitoring

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.

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.

Specifications

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

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Very reliable shop with genuine products. Will definitely buy again!

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Great price for an authentic product. Fast international shipping too!

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¥63790

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The delivery time was excellent, and the packaging was secure.

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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