Eyedro · Updated September 2026
Eyedro EYEFI-4 Home Energy Monitor: price & specs
Eyedro EYEFI-4 Home Energy Monitor. Every price and spec below is linked to its source and dated — no guesses.
Source: eyedro.com verified ✓ corroborated verify in ledger
The Eyedro EYEFI-4 Home Energy Monitor is listed at $139 on eyedro.com as of 2026-09-04, #4 cheapest of 8 home energy monitors (median $149); other retailers may be lower. It earns a Silver Deskmark — 71/100 pay-blind standing, #3 of 7 in class.
Verified Sep 4, 2026 · figures linked to their source in the table below
Cheapest home energy monitors: Shelly EM Gen3 50A Smart Energy Meter — $69.99
Price history
$139Is the Eyedro EYEFI-4 Home Energy Monitor a good buy?
At $139, the Eyedro EYEFI-4 Home Energy Monitor is #4 cheapest of the 8 home energy monitors we track, where the median is $169. On the spec sheet, its branch circuit count of 0 is the lowest of the 8, its accuracy percent of 1 is the lowest of the 6, and its main circuit amps of 200 is at the median of the 7.
Specifications
| Price (US) | $139 MSRP from eyedro.com. |
|---|---|
| Brand | Eyedro |
| Released | — |
| Monitoring type | ct-clamp |
| Main circuit amps | 200 |
| Branch circuit count | 0 |
| Connectivity protocol | Wi-Fi 802.11 b/g/n |
| Solar net metering | Yes |
| Local api support | Yes |
| Subscription required | No |
| App platforms | web (MyEyedro) |
| Accuracy percent | 1 |
| Installation type | external-ct (no panel wiring) |
| Smart home integrations | — |
| Etl ul certified | UL 61010-1, CSA C22.2#61010-1 |
Source: eyedro.com (verified 2026-06-27) · corroborated by amazon.com. Price $139 confirmed via search results and Amazon listing. 4x 200A CTs included. ±1% accuracy confirmed from product manual (UL 61010-1:2012 Ed.3). Local API confirmed (port 8080 /getdata JSON endpoint). Solar/net metering supported. MyEyedro cloud is free (no subscription). branchCircuitCount set to 0: the 4 CTs monitor mains/solar pairs, not individual branch circuits. Smart home integrations not documented by manufacturer — set null.
Is the Eyedro EYEFI-4 Home Energy Monitor worth it vs cheaper home energy monitors?
Eyedro EYEFI-4 Home Energy Monitor against its closest cheaper and pricier home energy monitors on the specs that matter — every value sourced. See all 8 ranked
| Product | Price | Monitoring type | Main circuit amps | Branch circuit count | Connectivity protocol | Solar net metering |
|---|---|---|---|---|---|---|
| Eyedro EYEFI-4 Home Energy Monitor this | $139 | ct-clamp | 200 | 0 | Wi-Fi 802.11 b/g/n | Yes |
| Shelly 3EM Smart 3-Phase Energy Meter | $121.49 | ct-clamp | 120 | 0 | Wi-Fi 802.11 b/g/n | Yes |
| Refoss EM16P Smart Energy Monitor | $159.99 | ct-clamp | 200 | 16 | Wi-Fi | Yes |
Frequently asked questions
How much does the Eyedro EYEFI-4 Home Energy Monitor cost?
The Eyedro EYEFI-4 Home Energy Monitor has a US price of $139 (MSRP from eyedro.com.), as of 2026-06-27.
How does the Eyedro EYEFI-4 Home Energy Monitor compare on price?
At $139, the Eyedro EYEFI-4 Home Energy Monitor is #4 cheapest of the 8 home energy monitors we track, where the median is $169.
Has the Eyedro EYEFI-4 Home Energy Monitor's price changed?
No — the Eyedro EYEFI-4 Home Energy Monitor has held at $139 since 2026-06-27.
What is the lowest price the Eyedro EYEFI-4 Home Energy Monitor has been?
The lowest we have recorded for the Eyedro EYEFI-4 Home Energy Monitor is $139 on 2026-06-27 — which is its current price.
Is now a good time to buy the Eyedro EYEFI-4 Home Energy Monitor?
At $139, the Eyedro EYEFI-4 Home Energy Monitor is at the lowest price we have recorded since 2026-06-27.
What are the Eyedro EYEFI-4 Home Energy Monitor's key specs?
Eyedro EYEFI-4 Home Energy Monitor (Eyedro): monitoringType ct-clamp, mainCircuitAmps 200, branchCircuitCount 0, connectivityProtocol Wi-Fi 802.11 b/g/n, solarNetMetering Yes. Full sourced spec sheet verified 2026-06-27.
Price of record: $139 at eyedro.com, 2026-09-04. Other retailers may be lower — check the current price:
Check current price at amazon.com As an Amazon Associate we earn from qualifying purchases.Similar home energy monitors
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