eufy Security Baby Monitor E21 4K
- 4K UHD camera with night vision
- 5 inch 720p parent display plus app viewing
- 330 degree pan, 60 degree tilt, 8x zoom
- 5,000mAh camera battery, plug-in or cordless
- Wi-Fi or local no Wi-Fi mode via a privacy switch
- 20 dB active noise reduction on audio
- Up to 5 family members share app access
- SD card not included, needed for local recordings
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A sharp, movable camera that works with or without Wi-Fi and travels well on battery. Local recordings need a memory card you buy separately.
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ASIN: B0DDXCWMRKModel: E21Category: Smart Baby Monitors
Overview
A nursery, a hotel room or a summer cabin all work with this eufy camera, since it runs on its built-in battery or plugged in. The camera pans, tilts and zooms, and video reaches a dedicated parent screen or the phone app, with or without home Wi-Fi.
Flexibility is the reason to choose it: a dedicated screen when Wi-Fi is off, app access when you are away, and a battery for moving between rooms. Recording to the camera requires buying a memory card, and the box holds a single camera, so split-screen twin viewing means adding another.
Who it's for
Families splitting time between home, grandparents and hotels can move the camera wherever the baby sleeps. Parents unwilling to manage an app, a memory card and a privacy switch may want fewer settings than this kit carries.
Pros and cons
- Works with or without home Wi-Fi
- Battery lets the camera move room to room
- Pan, tilt and zoom reach room corners
- Cry, temperature and loud noise alerts
- SD card for local recording sold separately
- Second camera needed for twin split screen
- Screen size listed two different ways
- Battery runtime not listed
Performance notes
Picture detail depends on the high resolution sensor and optical zoom, which let a parent see a face without moving the camera closer. In local mode, reach depends on the direct link between camera and screen, and the listing gives no distance. Active noise reduction filters background sound so the baby's sounds stand out in audio and alerts.
Specifications
| Brand | eufy Security |
|---|---|
| Model | E21 |
| Dimensions & fit | |
| Screen Size | 6 inches |
| Item Weight | 0.55 pounds |
| Item Dimensions | 9.1 × 3.9 × 5.5 inches |
| Power & efficiency | |
| Power Source | Battery |
| Wattage | 2 watts |
| Battery Power | 5000 mAh |
| Voltage | 5 volts |
| Construction & materials | |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS), Polycarbonate (PC) |
| Compatibility & installation | |
| Connectivity Technology | Wireless |
| Connectivity Protocol | Wi-Fi |
| Mount Type | Wall Mount |
| Installation Type | Freestanding |
| Compatible Devices | Smartphone |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Video Capture Resolution | 4k |
| Effective Video Resolution | 17.34 |
| Control Type | App |
| Viewing Angle | 330 degrees |
| Video Capture Format | MPEG-4 |
| Alert Type | Audio And Motion |
| Zoom Type | Optical Zoom |
| Number Of Items | 1 |
| Number Of Channels | 2 |
| Antenna Location | Baby Monitoring |
| Indoor Outdoor Usage | Indoor |
| Builtin Media | Baby Camera; Baby Monitor With Charging Stand; Camera Power Cable (3 M); Monitor Power Cable (1.5 M); Power Cable For Charging Stand (1.5 M); Power Adapters ×2(5V 2A); Mounting Plate; Cot Mount Set; Screw Pack; Quick Start Guide |
| Other Special Features Of The Product | Portable Charging Base |
| Mfr Part Number | T8352 |
| Wireless Technology | Wi-Fi |
| Night Vision | Night Color |
| Field Of View | 330 |
| Form Factor | Dome |
| Optical Zoom | 8 x |
| Controller Type | Android |
Frequently asked questions
Is the eufy E21 baby monitor a two camera set for twins?
No. The box lists one baby camera. The monitor can show two feeds on a split screen, so watching twins that way needs a second camera.
What mounting options come with the eufy E21?
The box includes a mounting plate, a cot mount set and a screw pack. The camera can also stand freely on a surface.
How long are the eufy E21 power cables?
The camera power cable is 3 m, and the monitor and charging stand cables are each 1.5 m. Two 5V 2A power adapters are included.
How secure is the eufy E21 baby monitor?
It uses RSA-1024 and AES-128 encryption, and each recording is protected with a unique key. A switch cuts off Wi-Fi for a private local connection.
What alerts does the eufy E21 send?
Alerts cover baby cries, room temperature changes and loud noises, and the app offers 24/7 recording to review sleep.