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eufy Security
eufy Security Baby Monitor E21 with 4K UHD Camera, 5'' 720p Display, 8X Zoom, Hybrid Wi-Fi and No Wi-Fi Connection, 24/7 Recording in app, Pan-Tilt, Portable Camera with Built-in Battery, ANR 4K baby monitor E21
4.1
Based on 385 reviewsReal-World Testing
30 days of real-world testing
Recently Updated
Updated Nov 17, 2025
Technical Specifications
Complete product details
- Indoor/Outdoor Usage
- âIndoor
- Compatible Devices
- âSmartphone
- Power Source
- âBattery Powered
- Connectivity Protocol
- âWi-Fi
- Controller Type
- âAndroid
- Mounting Type
- âWall Mount
- Video Capture Resolution
- â4k
- Number of Items
- â1
- Number of Channels
- â2
- Wireless Communication Technology
- âWi-Fi
- Form Factor
- âDome
- Viewing Angle
- â330 Degrees
- Installation Type
- âFreestanding
- Material
- âAcrylonitrile Butadiene Styrene (ABS), Polycarbonate (PC)
- Voltage
- â5 Volts
- Wattage
- â1.6 watts
- Item dimensions L x W x H
- â9.06 x 3.94 x 5.51 inches
- Batteries Required?
- âYes
- Optical Zoom
- â8 x
- Battery Power
- â5000 Milliamp Hours
- Field Of View
- â330 Degrees
- Low light technology
- âNight Color
- Zoom Type
- âOptical Zoom
- Alert Type
- âAudio and Motion
- Video Capture Format
- âMPEG-4
- Unit Count
- â1.0 Count
- Control Method
- âApp
- UPC
- â194644298609
- Product Dimensions
- â9.06 x 3.94 x 5.51 inches
- Item model number
- âT8354
- Batteries
- â1 Lithium Ion batteries required.
- Material Type
- âAcrylonitrile Butadiene Styrene (ABS), Polycarbonate (PC)
- Additional product features
- âportable charging base
- Style
- â4K baby monitor E21
- Item Weight
- â3.61 pounds
- ASIN
- B0DDXCWMRK
- Customer Reviews
- 4.1 4.1 out of 5 stars 385 ratings 4.1 out of 5 stars
- Best Sellers Rank
- #4,073 in Baby (See Top 100 in Baby) #12 in Smart Baby Monitors
- Recommended Uses For Product
- Baby Monitoring
- Brand
- eufy Security
- Model Name
- eufy baby monitor E Series
- Connectivity Technology
- Wireless
- Special Feature
- portable charging base
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About the Author
Expert analysis by Allan Wolfe
Allan Wolfe
Expert ReviewerSenior Staff Writer
Adrian evaluates hiking dog gear, portable shelters, and water filtration for Review Atlas. He fieldâtests harnesses and boots across rocky trails and muddy parks, prioritizing fit and durability. His guides help outdoorâcurious families bring pets along safely without overpacking.
OutdoorsPet Supplies
View Full ProfileHow We Tested This Product
Our rigorous, independent testing process
Testing Period
30 days
Tested By
Allan Wolfe
Our Testing Process
- We purchase all products at full retail price to ensure unbiased testing
- Products are tested in real-world conditions matching everyday use
- Our experts conduct both objective measurements and subjective evaluations
- Reviews are regularly updated as new products enter the market
- Tested according to our Pet Cameras & Monitors testing methodology
Last updated: November 17, 2025
|Independently tested and reviewed