Amazon has
Refoss Smart Home Wi-Fi & Bluetooth Energy Monitor System w/ 16x 60A Circuit Sensors (EM16) on sale for
$157.49.
Shipping is free.
Thanks to Community Member
ficky23 for sharing this deal.
About this product:
- Supports 2 main circuit sensors (up to 200A each) and 16 branch circuit sensors (up to 60A each) with 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.
- Keep track of your home's electricity usage anytime, anywhere with the Refoss app. Easily monitor power, current, voltage, and power factor for major appliances like air conditioners, furnaces, and water heaters. Track real-time electricity usage data to see what's running and identify what's consuming power.
- Identify energy-hungry appliances, and set usage goal for each circuit. You'll receive alerts for unusual energy spikes, and take proactive steps to lower your electricity bills and save more energy.
- The Refoss energy monitor offers 98% accuracy and can store up to 36 months of data. Easily access detailed electricity usage and cost graphs by minute, hour, day, month, or year, giving you deep insights into your energy consumption and empowering you to make smarter energy decisions.
- Specs:
- Power Supply: 100-240V~, 50/60Hz
- Supported System:
- Single-phase, 2-wire systems
- Split-phase, 3-wire systems
- Three-phase, 4-wire Wye systems with earthed (TN or TT) neutral (no-Delta)
- Voltage-current Correspondence:
- Red -> A1~ A6, Power
- Green -> B1~ B6
- Black -> C1~ C6
- Main Current Transformers:
- Max Primary Current: 200A
- Max Voltage: 250V (Primary) / 333mV (Secondary)
- Burden Resistor: 7.2ohm, 1%, 62.5mW
- Cable Length: 1m
- Inside Diameter: 24mm
- Branch Current Transformers:
- Max Primary Current: 60A
- Max Voltage: 250V (Primary) / 333mV (Secondary)
- Burden Resistor: 18.2ohm, 1%, 62.5mW
- Cable Length: 1m
- Inside Diameter: 10mm
- Includes: Home Energy Monitor, Wi-Fi Antenna Assembly, 2x 200A Current Transformers, 16x 60A Current Transformers, 2x 3.5mm Insulation Plugs, 16x 2.5mm Insulation Plugs, 3x Wire Nuts, 3x Extra Wires, Wire Harness, User Manual
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However, sense is UL certified, and I know my solar installer offers installing it for my system (where-as they won't install anything else).
Our community has rated this post as helpful. If you agree, why not thank dnguyen800
The Vue 2 and 3 units flashed to ESPHome have been bulletproof for me. I actually just decommissioned my iotawatt in favor of more emporia units to have more expansion ability.
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Our community has rated this post as helpful. If you agree, why not thank GreenRose9133
While you can use their third party app, I'm personally more interested in storing that data locally via home assistant (server local in your home) and avoiding having my data on the cloud all together. You can view historical data (charts) in home assistant dashboard on your phone or PC (browser).
It can help you identify potential problems with well pumps, septic, water heaters, etc that would otherwise be difficult to pinpoint when they're malfunctioning.
I bought mine to track why my energy usage was high and I have it send me notifications when something has been left on and running for awhile like when someone forgets to turn off the base board heat.
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So my bill shot up about $10 a day now that we're in the heat of summer. I've switched my pool pump to running at night, tweaked my 3 ecobees that control a damper system, and discovered my hybrid water heater had a bad thermoresister. That's not running any lights during the day. All appliances just sucking power. I'm already saving over $10 a day. This is why a system that can tell you how much a circuit is running you can identify and tweak.
My 4000+sqft house has over 60 breakers on 400 amps of service.
Go ahead and turn off a LED light and see how much electricity I save...
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