Shelly

Shelly Pro 3EM 120A Wi-Fi LAN 3-Phase Smart Energy Meter 2-Way Consumption Home Automation Bluetooth Gateway Compatible with

4.6(3,183)
$118.47$149.99

202+ bought in the past month

About this item

  • Shelly Pro 3EM is a Wi-Fi-operated, DIN-mountable 3-phase energy meter with Wi-Fi and LAN connectivity. With an active energy measurement accuracy of 1%, it allows precise monitoring of energy consumption for home appliances, electric circuits, and office equipment individually. The package includes three 120A Current Transformers for enhanced measurement. Additionally, it functions as a Bluetooth gateway, expanding connectivity for smart home automation.
  • Monitor your home, office, or factory and avoid additional expenses or drops in voltage that can damage your appliances and devices. Shelly Pro 3EM can calculate 2-way consumption: produced and used energy for each of the three phases | Industry grade security- the device can have direct connections to your cloud infrastructure, reducing the cost of deploying complex networks and VPNs.;
  • Solar Panels Monitoring and Control - Keep track of how much energy your solar panels or wind turbines are generating and save effortlessly. Access real-time information about the efficiency of your system and historical data for up to 60 days.
  • Shelly Customer Service - Shelly is one of the fastest-growing IoT brands in the world with devices, providing solutions for the automation of private homes, buildings and businesses. We provide our customers with professional support and a 5 years device warranty.
  • Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation.
$118.47
Was $149.99Save $31.52

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Shelly USA
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Product details
Connector TypeClamp
Contact MaterialSteel
Contact TypeNormally Open
Current Rating120 Amps
Mounting TypeDIN Rail Mount

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Customer reviews

4.63,183 ratings
  1. 5★88%
  2. 4★13%
  3. 3★0%
  4. 2★0%
  5. 1★0%

Customers say

Customers find the energy meter works well, with one mentioning it can be rebooted from Home Assistant. Customers appreciate its ease of installation, with one noting it requires no programming.

★★★★★

Works perfectly and easy to install / setup

Tom—January 18, 2026✓ Verified purchase

Excellent product and easy installation. Allows me to monitor a remote condo and keep tabs on the HVAC and power consumption. The app is well polished and provides all the information and control you would expect with this device Read more

★★★★★

Cool power monitor/relay great interfaces

Doug A—February 6, 2026✓ Verified purchase

Outstanding piece of kit. WiFi and wired Ethernet, web, JSON, Matter, Modbus and more all built in. Mine worked right out of the box. Got ic controlled via the web and MODBUS TCP. Handy device priced right. Read more

★★★★★

Pro level current meter at a bargain price!

CuriousJoe—July 12, 2025✓ Verified purchase

Fantastic current meter! The bonus is built in Ethernet! Small size will fit in tight spaces and easy install. Great function, except for some reason data download is not working right. There is also connection point for 1 more CT, but last I checked it is not sold separately. AND I wish there was short piece of DIN rail in box. Read more

★★★★★

WOW

Guillermo M.—February 19, 2026✓ Verified purchase

I love it. Definitely is the amazing device and so easy to install. Perfect size. The connectivity is so great. Read more

★★★★☆

Works great when integrated with HomeAssistant

Dave—January 2, 2026✓ Verified purchase

Great product generally, although there are a couple issues with the REST API if you're trying to write your own code to control it. Bad SSL certificate for https, and it rejects https requests anyway with a 443 error, yet it also does a strange redirect to https when you call http on port 80. I tried updating the firmware but issue remains. Integrated with HomeAssistant and called that API instead, which works great. Would be 5 stars if not for the odd issues with restful calls. Read more

★★★★★

Excellent tool to keep historical power usage.

Bill Burton—February 26, 2026✓ Verified purchase

Monitoring various branches of my inverted AC outputs to various appliances. Works great and is very accurate. These measurements are logged on charts for historical monitoring. Easy install and no programming needed. Read more

★★★★★

Great product

Mohammed Ben-Hussain—January 28, 2026✓ Verified purchase

Worth the value, high quality and reliable Read more

★★★★★

👍

Guy Sheffi—February 14, 2026✓ Verified purchase

Easy to install and does what it claims to do.. Read more

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