eufy
eufy Baby Monitor E21
$259.99Cheaper
Released 2024
Best Baby Monitors · head-to-head
eufy Baby Monitor E21 vs CuboAi Smart Baby Monitor (Plus Bundle with Floor Stand)
A sourced, side-by-side comparison. eufy Baby Monitor E21 is cheaper at $259.99. Every spec and price links to its source.
CuboAi
CuboAi Smart Baby Monitor (Plus Bundle with Floor Stand)
$299
Released 2021
Which is better: the eufy Baby Monitor E21 or CuboAi Smart Baby Monitor (Plus Bundle with Floor Stand)?
On the specs we track, they're closely matched. The eufy Baby Monitor E21 is the cheaper at $259.99.
See eufy Baby Monitor E21 on Amazon See CuboAi Smart Baby Monitor (Plus Bundle with Floor Stand) on Amazon
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | eufy Baby Monitor E21 | CuboAi Smart Baby Monitor (Plus Bundle with Floor Stand) |
|---|---|---|
| US price | $259.99 | $299 |
| Brand | eufy | CuboAi |
| Released | 2024 | 2021 |
| Camera resolution | 4K UHD | 1080p Full HD |
| Connectivity | Hybrid: WiFi 2.4 GHz (remote app access) + local wireless transmission (in-home, no internet required) | WiFi 2.4 GHz |
| Range (ft) | 1000 | — |
| Battery hr | 15 | — |
| Night vision | Yes | Yes |
| Two way audio | Yes | Yes |
| Sensors | Motion detection; sound detection; temperature reading | AI face-covered alert; AI rollover alert; danger zone alert; cry detection; sleep tracking; temperature reading |
| Subscription | none | optional |
| Release | 2024 | 2021 |
Sources — eufy Baby Monitor E21: eufy.com (verified 2026-06-15). CuboAi Smart Baby Monitor (Plus Bundle with Floor Stand): target.com (verified 2026-06-15).
What's the difference between the eufy Baby Monitor E21 and CuboAi Smart Baby Monitor (Plus Bundle with Floor Stand)?
Where the two actually differ on the specs we track (4 of 8). Matching specs are omitted.
- Camera resolution: eufy Baby Monitor E21 4K UHD vs CuboAi Smart Baby Monitor (Plus Bundle with Floor Stand) 1080p Full HD
- Connectivity: eufy Baby Monitor E21 Hybrid: WiFi 2.4 GHz (remote app access) + local wireless transmission (in-home, no internet required) vs CuboAi Smart Baby Monitor (Plus Bundle with Floor Stand) WiFi 2.4 GHz
- Sensors: eufy Baby Monitor E21 Motion detection; sound detection; temperature reading vs CuboAi Smart Baby Monitor (Plus Bundle with Floor Stand) AI face-covered alert; AI rollover alert; danger zone alert; cry detection; sleep tracking; temperature reading
- Subscription: eufy Baby Monitor E21 none vs CuboAi Smart Baby Monitor (Plus Bundle with Floor Stand) optional
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
eufy Baby Monitor E21
Only one whitelisted outlet — Good Housekeeping — published a genuine hands-on review of the exact eufy Baby Monitor E21. The GH reviewer tested it in her own home over a year, and it also won a 2025 Parenting Award with parent-tester feedback. The verdict is glowing but entirely qualitative, with no lab-measured numbers reported. Praise covers 4K clarity, 8x zoom, effective night vision, easy setup, a compact travel mount, and Wi-Fi-optional flexibility. Treat this as single-source and unverified against a second tester. (1 sourced review, 1 lab-tested.)
Praised: 4K video quality called among the sharpest the tester has seen on a baby monitor; 8x zoom sharp enough to make out fine detail like a finger moving; Effective night vision.
CuboAi Smart Baby Monitor (Plus Bundle with Floor Stand)
Two whitelisted hands-on testers reviewed the exact Cubo Ai Plus; Tom's Guide explicitly tested the $299 floor-stand bundle, and TechHive reviewed the same Plus camera with the floor-stand mount documented. Neither ran lab benchmarks, so there are no measured numbers. Both praise the covered-face/rollover safety alerts and the danger-zone feature, both flag the water-weighted floor stand and the premium subscription needed to download video. All six quotes were verified verbatim against the fetched articles. (2 sourced reviews, 2 lab-tested.)
Praised: Covered-face and rollover safety alerts plus the danger-zone boundary feature are genuinely useful for newborns and mobile toddlers; Charming bird design with no visible red night-vision light to wake the baby; Sharp 1080p image quality (TechHive rated it excellent).
Flagged: The water-weighted floor stand is a weak point: Tom's Guide found it wobbly and too light (a one-year-old could move it), and TechHive was uncomfortable with the water-bag weighting in a nursery; Downloading video and getting full analytics requires the paid premium subscription; Detachable temperature/humidity dongle is easy to lose.