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Product description

Gen3 Series Features

Powered by Shelly chip (8 MB), Gen3 devices are with doubled memory and are Matter upgradable. Theyintroduce virtual components for unified control of third-party devices with Shelly Smart App.

Local Monitoring

Automate Shelly EM Gen3 locally with rules based on the power consumption in real time, or over a certain period of time. Access stored energy consumption records directly from the device UI.

Remote Monitoring

Connect to Shelly Smart Control app, collect and store power consumption data (data logs go back to 365days). This allows to monitor your appliances remotely, via your phone.

Heavy Load Control

Use contactor control to manage heavy-load appliances, such as water heaters, hot tubs, heat pumps, andlarge kitchen appliances.

Appliance Health Check

Track the individual consumption patterns of your appliances and identify any unexpected spikes or shifts.These are the warning signs of appliance malfunction.

Size (HxWxD): 37x42x16 ±0.5 mm / 1.46×1.65×0.63 ±0.02 in Mounting Wall console, Electrical cabinet Ambient temperature -5 °F to 105 °F Humidity 30 % to 70 % RH Power supply 110 – 240 V~ 50/60 Hz Power consumption < 1.2 W Max switching voltage 240 V~ Max. switching current 2 A/240 V~ Voltmeter (AC) 110-240 V~ 50/60 Hz Voltmeter accuracy ±2% Ammeter (AC): 0 – 80A Power and energy meters Active and apparent power and energy, Power factor, Fundamental active and reactive energy No load threshold 30 VA per channel Wi-Fi Protocol 802.11 b/g/n Webhooks (URL actions) 20 with 5 URLs per hook Scripting and MQTT Yes

Shelly Devices Comparison Table

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Customer Reviews

4.6 out of 5 stars 110

4.7 out of 5 stars 1,723

4.6 out of 5 stars 486

4.8 out of 5 stars 49

Price

$61.99$61.99

$128.99$128.99

$81.49$81.49

$77.49$77.49

Functions

Real-time energy monitoring

Additional functions

Measures up to 50 A per phase

Measures up to 120 A per phase

Measures up to 50 A per phase

Measures up to 63 A per phase

Power Supply

Inputs

2 Inputs

3 Inputs

2 Inputs

3 Inputs

Outputs

2 Channels

3 Channels

2 Channels

3 Channels

Wi-Fi and Bluetooth

✔

Does Shelly EM Gen3 support measurement of PV systems?

Yes, it does! If you plan to use this device with EcoFlow or another renewable energy solution, please contact the PV product/service provider directly for compatibility details and requests.

Shelly EM Gen3 displays inaccurate measurements. What should I do?

To ensure smooth operation, always rely on the official wiring diagrams and make sure CTs are attached to live (phase) only – the same from which the device was powered on. More wiring examples could also be found at community.shelly.cloud

Shelly EM Gen3 heats? Should I be concerned?

The device is designed for safe operation: with a maximum ambient temperature of 40 °C, and built-in overheating protection that activates at 95 °C. To avoid heating, make sure the device is properly wired.

My Shelly EM Gen3 disconnects frequently. What should I do?

Set a static IP out of the DHCP range and pay attention on the RSSI signal. Make sure that you do not have smart features enabled on your router and you are using the best wifi channel suitable for you. Contact the support for further troubleshooting

Authentication error – what should I do?

The device comes with no restrictions when it comes to authentication. It can be added additionally, using the SHA-256 algorithm.

Language ‏ : ‎ English
Product Dimensions ‏ : ‎ 1.46 x 1.65 x 0.63 inches; 0.81 ounces
Item model number ‏ : ‎ 3800235261873
Date First Available ‏ : ‎ August 20, 2025
Manufacturer ‏ : ‎ Shelly Europe
ASIN ‏ : ‎ B0DKFY2ZNV
Best Sellers Rank: #152,449 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #150 in Home Automation Hubs & Controllers
Customer Reviews: 4.6 4.6 out of 5 stars 110 ratings 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); } }); });
Shelly EM Gen3 – Compact Wi-Fi Smart Energy Meter & Contactor Control Relay (Single Phase, 2-Channel). Features an 8MB Shelly chip with 10-day local data logging at 1-minute intervals. Gain detailed insights into appliance power usage, optimize efficiency, and reduce energy costs. Fits easily behind sockets, switches, or in tight spaces. *Shelly EM Gen3 comes with a 50 A clamp included in the pack
Total Power Monitoring – Track your home’s energy use with Shelly EM Gen3 – ideal for single-phase systems. It monitors total power consumption at the breaker box and gives you real-time control. Connect a contactor to automatically cut off non-essential appliances and save energy.
Appliance Health Monitoring – Ensure your appliances run at peak performance and last longer by tracking their individual energy usage. Shelly EM Gen3 helps you spot unusual power patterns – like sudden spikes or drops – that can signal wear or malfunction. Catch issues early, prevent costly repairs, and maintain efficiency with proactive energy monitoring.
Shelly Customer Service – Shelly is one of the fastest-growing Smart Home 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 3 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.