Updated November 2026
Data from the official NodOn and Shelly sites.
2026 verdict
In 2026, the recommendation leans toward Shelly EM Gen4 over NodOn Zigbee Smart Energy Monitor, driven by rating, warranty, and connectivity.
Its clearest strengths are rating, warranty, and connectivity, and it still looks stronger on integrations and data & monitoring. Pick NodOn Zigbee Smart Energy Monitor only when price is the deciding factor for your setup. As a general recommendation, Shelly EM Gen4 comes out on top.
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| Feature | NodOn Zigbee Smart Energy Monitor | Shelly EM Gen4 | Winner |
|---|---|---|---|
| Price | $57.50 | £63.84 | NodOn Zigbee Smart Energy Monitor |
| Rating | 4.7 | 4.8 | Shelly EM Gen4 |
| Warranty | 2 years | 3 years | Shelly EM Gen4 |
| Connectivity | Zigbee | 2.4 GHz WiFi, Bluetooth, Zigbee | Shelly EM Gen4 |
| Integrations | Samsung SmartThings, Home Assistant | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Shelly EM Gen4 |
| Data & Monitoring | None | Energy Cost Tracking, Time-of-Use Rates, Data Export, Usage Alerts | Shelly EM Gen4 |
| Local Control | None | Local API, MQTT, Local Web Interface | Shelly EM Gen4 |
| Relay Output | NO | YES | Shelly EM Gen4 |
| Metering | Solar Net Metering, Power Factor Readings | Solar Net Metering, Power Factor Readings | Tie |
| Breaker Panel Install | YES | YES | Tie |
| Smart Meter Port | NO | NO | Tie |
| Load Management | YES | YES | Tie |
$57.50
- + Price: $57.50
- - Rating: 4.7 vs 4.8
- - Warranty: 2 years vs 3 years
Winner
£63.84
- + Rating: 4.8
- + Warranty: 3 years
- + Connectivity: 2.4 GHz WiFi, Bluetooth, Zigbee
- - Price: £63.84 vs $57.50
Frequently Asked Questions
Which is better overall: NodOn Zigbee Smart Energy Monitor or Shelly EM Gen4?
Shelly EM Gen4 has the stronger overall profile in this comparison, especially for rating, warranty, and connectivity.
What is the biggest difference between NodOn Zigbee Smart Energy Monitor and Shelly EM Gen4?
Price is one of the clearest differences: NodOn Zigbee Smart Energy Monitor lists $57.50, while Shelly EM Gen4 lists £63.84.
Which one looks better on price?
NodOn Zigbee Smart Energy Monitor is listed at $57.50, while Shelly EM Gen4 is listed at £63.84. NodOn Zigbee Smart Energy Monitor (better spec).
Who should buy NodOn Zigbee Smart Energy Monitor?
Choose NodOn Zigbee Smart Energy Monitor if your priority is price and that matters more than rating.
Who should buy Shelly EM Gen4?
Choose Shelly EM Gen4 if your priority is rating and warranty and that matters more than price.
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Compare all 25 Energy Monitors side by side
You are looking at two of them. The full table lines up all Energy Monitors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 25 Energy Monitors
- 47 specs compared
- 44 filters
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EM Mini Gen4
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EM16P
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Pro 3EM-400
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EM06P
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Home Energy Meter 8
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EM06P
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EM16P
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MINI PM Zigbee Power Meter (Non-Switch)
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Vue Utility Connect
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3CT Zigbee Energy Meter
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EM01P
- Buttons
Battery-free Zigbee Wall Switch
- Energy Monitors
3CT Zigbee Energy Meter
- IR Remote Controls
Zigbee AC Infrared Controller
- Radiator Valves
Zigbee Thermostatic Radiator Valve
- Relays
Zigbee Multifunction Relay Switch with Metering
- Relays
Zigbee Multifunction Relay Switch
- Relays
Zigbee ON/OFF Lighting Relay Switch
- Relays
Zigbee Pilot Wire Heating Module
- Relays
Zigbee Roller Shutter Relay Switch
- Temperature & Humidity Sensors
Zigbee Temperature and Humidity Sensor
- Buttons
BLU Button Tough 1 ZB
- Buttons
BLU RC Button 4 ZB
- Cameras
Camera
- Displays
Wall Display X1i
- Displays
Wall Display XL
- Displays
Wall Display
- Door & Window Sensors
BLU Door/Window Outdoor ZB
- Door & Window Sensors
BLU Door/Window ZB
- Energy Monitors
3EM-63W Gen3
- Energy Monitors
EM Gen3
- Energy Monitors
EM Mini Gen4
- Energy Monitors
Pro 3EM 3CT63
- Energy Monitors
Pro 3EM-400
- Energy Monitors
Pro 3EM v2
- Energy Monitors
Pro EM-50
- Gas Detectors
GAS (CNG)
- Gas Detectors
GAS (LPG)
- LED Bulbs
Multicolor Bulb E27 Gen3
- Motion Sensors
BLU Motion ZB
- Motion Sensors
Blu Motion