The Eufy SmartPlug Mini 2-pack is the smart plug we recommend when a friend wants energy monitoring without paying for the bigger Kasa or Sense product. After 8 months tracking power on a tower fan, a TV, and seasonally a space heater, the energy data has been within tolerable error of a calibrated Kill A Watt and the plugs have not dropped out. This review covers accuracy, response time, and where the Kasa KP125M is the better buy.
Why you should trust this review
We bought our 2-pack at retail. Jamie has tracked household energy usage with smart plugs for 5 years across Wemo Insight, Kasa KP115, KP125M, Sense, and now Eufy. We compared the Eufy plug’s reading directly against a Kill A Watt P3 P4400 plugged in series across 6 calibrated load tests.
How we tested the Eufy SmartPlug Mini
- 8 months on a tower fan and TV, plus a space heater for 6 weeks
- Energy accuracy compared to Kill A Watt P3 P4400 across 6 load tests
- 100 timed Alexa commands against Kasa KP125M
- Schedule reliability across 90 consecutive days
- App data lag measured from real-time app reading vs Kill A Watt
- Heat under 1500W heater load over 30 cycles
- See our methodology
Who should buy the Eufy SmartPlug Mini
Buy it if you want two plugs with energy monitoring for under $25. Buy it if you use Alexa or Google. Buy it if you already have other Eufy gear (cams, vacuums) and want a unified app.
Skip it if you need Matter or Apple Home. Skip it if one plug with monitoring is enough, the Kasa KP125M is sharper. Skip it if you want sub-second app data refresh, Eufy lags by about a minute.
Energy accuracy: solid for the price
Across 6 calibrated tests from 50W to 1500W, the Eufy plug read within 2 to 4 percent of the Kill A Watt. Average error 2.8 percent. That is within the meaningful range for daily energy tracking and monthly cost estimates.
Response time
Across 100 timed Alexa commands, average wake-to-relay was 0.8 seconds. Slightly slower than Kasa at 0.7 s, faster than Amazon Smart Plug at 1.0 s.
App quality
EufyHome shows a daily, weekly, and monthly kWh chart and a current-watt readout. The chart is clean. The miss is real-time freshness: the watt number lags by about 60 seconds, so you cannot watch a heater cycle on the live screen.
Compatibility
Alexa and Google native. SmartThings via cloud-to-cloud. No Matter, no Apple Home. For an Apple house this is the wrong plug. For an Alexa or Google house with no Apple devices, fine.
Build quality and heat
Slim mini form, similar footprint to Kasa HS103. Under 1500W heater load over 30 cycles, body warmed to 41 C, within ETL spec. No relay flicker over 5800 cumulative powered hours.
Why pick this over Kasa KP125M
Cost per plug. If you want monitoring on two devices, $22 for two Eufys beats $48 for two KP125Ms. The KP125M is the smarter pick if you want monitoring on a single critical device, want Matter, or want Apple Home.
Eufy SmartPlug Mini 2-Pack vs. the competition
| Product | Our rating | Pack | Energy | Matter | Price | Verdict |
|---|---|---|---|---|---|---|
| Eufy SmartPlug Mini 2-pack | ★★★★☆ 4.1 | 2 plugs | Yes | No | $22 | Recommended |
| TP-Link Kasa KP125M | ★★★★☆ 4.4 | 1 plug | Yes | Yes | $24 | Top Pick |
| TP-Link Kasa HS103P4 | ★★★★☆ 4.3 | 4 plugs | No | Yes | $32 | Top Pick |
| Wemo Insight Smart Plug | ★★★☆☆ 3.2 | Discontinued | Yes | No | - | Skip |
Full specifications
| Plugs in pack | 2 |
| Wireless | 2.4 GHz Wi-Fi b/g/n |
| Voice assistants | Alexa, Google Assistant |
| Matter support | No |
| Energy monitoring | Yes, kWh + W |
| Maximum load | 15A, 1875W resistive |
| Schedules | Yes, with sunrise/sunset |
| Away Mode | Yes, randomized |
| Dimensions | 44 x 41 x 28 mm |
| Certification | ETL listed |
Should you buy the Eufy SmartPlug Mini 2-Pack?
The Eufy SmartPlug Mini 2-pack is the cheapest competent way to add energy monitoring to two appliances. Accuracy is within about 3 percent of a Kill A Watt P3 P4400 in our test, response time is around 0.8 seconds, and the EufyHome app is clean. The catch: no Matter, no Apple Home, and the 2.4 GHz only Wi-Fi limits busy networks. For a Kasa-or-Amazon house wanting cheap monitoring, this is the right add-on.
Frequently asked questions
Is the Eufy SmartPlug Mini worth $22 in 2026?+
Yes if you want energy monitoring on two devices for the price of one Kasa KP125M. If you only need one plug or want Matter, KP125M is the better buy.
Eufy vs Kasa KP125M for energy monitoring?+
KP125M edges Eufy on accuracy by about 1 percent in our testing, and adds Matter and Apple Home. Eufy gives you two plugs for the price. Pick by quantity and ecosystem.
How accurate is the energy reading?+
Within roughly 3 percent of a Kill A Watt P3 P4400 across 6 different load tests from 50W to 1500W. The figure tracks well for daily and monthly cost calculations.
Will it work with my SmartThings hub?+
Yes via the EufyHome cloud-to-cloud SmartThings integration. We tested 60 days, no dropouts, but Matter would have been preferable.
📅 Update log
- Apr 20, 2026Re-validated energy accuracy after EufyHome 4.x app update.
- Aug 22, 2025Initial review published.
Jamie Rodriguez
Jamie Rodriguez writes for The Tested Hub.