With support for 4 IP camera channels and room for 2 internal hard disks, the KN-0421BE network video recorder from the practical Beryllium series is an ideal choice for small spaces that need a long-term video archive.
-
NO.of Channels 4CH
-
NO.of HDDS 2HDD
-
Smart Code CODEC
Overview
With support for 4 IP camera channels and room for 2 internal hard disks, the KN-0421BE network video recorder from the practical Beryllium series is an ideal choice for small spaces that need a long-term video archive. It keeps a compact design and simple setup, yet offers far more storage than single-drive models. Smart event recording and advanced video compression make monitoring homes, shops and small business offices far more efficient, intelligent and reliable.
CPU & GPU Capabilities
- CPU
- Dual-Core ARM Cortex
- IP Channel Input
- 4CH x 4K@30fps
Recording
- Video Resolution
- 1080P, 12MP, 2CIF, 3MP, 4CIF, 4MP, 5MP, 720P, 8MP, CIF, DCIF, QCIF, VGA
- Input Bandwidth
- 40 Mbps
- Record Mode
- Alarm, Event, Manual, Schedule, Smart Event
- Pre & Post Record
- Post 10~300 sec, Pre 1~30 sec
General
- Web Viewer
- Chrome, Edge, Firefox, IE
- Power Supply
- 200~240V AC, 50~60Hz
- Working Environment
-
-20°C ~ +
65°C / 10% ~ 90% RH (Non condensing) - Rackmount
- Yes 1 Unit
- Dimension (W×D×H)
- 376*277*45 mm
- Weight
- 2.1 Kg Without HDD
Network
- Smart Device
- Android Phone, Android Tablet, iOS
Hard Disk
- HDD
- 2 SATA
- Capacity
- Up To 14 TB For Each HDD
- RAID Support
- Mirror
- Group HDD
- Yes
Interfaces
- Network
-
1 x RJ45
(10/ 100/ 1000Mbps)+ LED Indicator
External Interface
- 4G Dongle / Wifi
- Supported
- USB Interface
- Front Panel: 1 × USB 2.0 Rear Panel: 1 × USB 2.0
- eSATA
-
N/
A - Alarm In / Alarm Out
- 8 / 1
- Controller
-
N/
A
Guarantee
- Power Consumption
- ≤10 W Without Hard Disk
- Product Guarantee
- 3 Years Platinum Guarantee
- MTBF
- 100,000 hrs min. MIL-HDBK-217F (25°)
Video/Audio
- HDMI Output
- 1CH x 4K (3840 × 2160)
- VGA Output
- 1CH x Full HD (1920 × 1080)
- Audio Input/ Output
- 1CH Input, 1CH Output
- Video Compression
-
H.264+
(Ultra H.264) H.265+ (Ultra H.265) Smart Event Codec - Audio Compression
- G.711a, G.711u
Playback & Backup
- Sync Playback
- 4CH (Up to 4K@30fps)
- Search Mode
- Alarm Input, All Smart Function, Motion, Time & Date
- Playback Mode
- ANR Support, Event, Label, Normal, Picture Playback, Smart Playback, Time Division
- Backup Mode
- Network, USB Device
Network & Monitoring
- Protocols
-
DDNS, DHCP, FTP, HTTP, HTTPS, ICMP, Multi Cast, NAT, NTP, P2P, RTSP, SNMP, TCP/
IP V4, TCP/ IP V6, UDP, UPnP - Compatibility
- API CGI ONVIF (Profile S, G, T) SDK
- Output Bandwidth
- 80 Mbps
- User
- 32 Users
- Streaming Method
- Multicast, Unicast
- Windows Software
-
Unlimited KDT CMS/
VMS - Smart Device
- Android Phone, Android Tablet, iOS
Smart Function
- Intelligent Functions
- Area Intrusion Audio Exception Detection Blurred Detection Car Shape Detection Face Detection Fast Moving Human Detection Line Crossing Loitering Detection Motion Detection Object Missing Parking Detection People Counting People Gathering Detection Region Entrance Region Exiting Scene Change Detection Unattended Objects Video Shelter
Compare products
Compare this product with similar products
Please wait
Frequently asked questions: Network Storage
Answers to common questions about this product line, from the KDT Help Center.
Where should I start when choosing the right network storage?
Start by defining the intended use, the number of devices, the installation environment, the capacity required and your plans for future expansion. Then choose the model and technical specifications based on what the project actually needs.
Which technical specifications matter most for network storage?
Depending on the project, the most important specifications are capacity, speed, compatibility, environmental ratings, management features and scalability. Basing your choice on a single figure is usually not enough.
Is a cheaper network storage model always the right choice?
No. The purchase price is only one factor. You also need to consider reliability, features, service life, after-sales service and maintenance costs.
How do I work out how much capacity a network storage system needs?
Base the calculation on the number of devices, actual usage, how long the system will be in use and how much the project is likely to grow. It is also wise to keep some capacity in reserve.
Can network storage be upgraded later?
In many cases, some of the capacity or equipment can be upgraded. However, this depends on the product's architecture and its hardware limitations, so check before you buy.
Didn’t find your answer?
Warranty
3-Year Platinum Warranty
This product comes with the official KDT warranty. Check your device’s warranty status with its serial number.
Check warranty

