Eyedro
Eyedro EYEFI-4 Home Energy Monitor
$139
Best Home Energy Monitors · head-to-head
Eyedro EYEFI-4 Home Energy Monitor vs Shelly 3EM Smart 3-Phase Energy Meter
A sourced, side-by-side comparison. Shelly 3EM Smart 3-Phase Energy Meter is cheaper at $121.49. Every spec and price links to its source.
Shelly
Shelly 3EM Smart 3-Phase Energy Meter
$121.49Cheaper
Which is better: the Eyedro EYEFI-4 Home Energy Monitor or Shelly 3EM Smart 3-Phase Energy Meter?
On the specs we track, they're closely matched. The Shelly 3EM Smart 3-Phase Energy Meter is the cheaper at $121.49.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Eyedro EYEFI-4 Home Energy Monitor | Shelly 3EM Smart 3-Phase Energy Meter |
|---|---|---|
| US price | $139 MSRP from eyedro.com. | $121.49 |
| Brand | Eyedro | Shelly |
| Released | — | — |
| Monitoring type | ct-clamp | ct-clamp |
| Main circuit amps | 200 | 120 |
| Branch circuit count | 0 | 0 |
| Connectivity protocol | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n |
| Solar net metering | Yes | Yes |
| Local api support | Yes | Yes |
| Subscription required | No | No |
| App platforms | web (MyEyedro) | iOS, Android, web |
| Accuracy percent | 1 | — |
| Installation type | external-ct (no panel wiring) | din-rail |
| Smart home integrations | — | Home Assistant, Alexa, Google Home, MQTT, CoAP, REST API |
| Etl ul certified | UL 61010-1, CSA C22.2#61010-1 | — |
Sources — Eyedro EYEFI-4 Home Energy Monitor: eyedro.com (verified 2026-06-27). Shelly 3EM Smart 3-Phase Energy Meter: us.shelly.com (verified 2026-06-27).
What's the difference between the Eyedro EYEFI-4 Home Energy Monitor and Shelly 3EM Smart 3-Phase Energy Meter?
Where the two actually differ on the specs we track (3 of 12). Matching specs are omitted.
- Main circuit amps: Eyedro EYEFI-4 Home Energy Monitor 200 vs Shelly 3EM Smart 3-Phase Energy Meter 120
- App platforms: Eyedro EYEFI-4 Home Energy Monitor web (MyEyedro) vs Shelly 3EM Smart 3-Phase Energy Meter iOS, Android, web
- Installation type: Eyedro EYEFI-4 Home Energy Monitor external-ct (no panel wiring) vs Shelly 3EM Smart 3-Phase Energy Meter din-rail