Specification Sheet

4K ULTRA HD DIGITAL VIDEO RECORDER
Product Specications
lorex.comD841 Series
General
Video Transmission
Technology
HD Analog
Channels 8/16 Channels
Inputs/Outputs
Video Input(s)
8/16 × 1Vp-p, CVBS, 75ohms, BNC Type
Video Outputs(s)

1 × VGA, 1 × HDMI
Audio Input(s) 1 ch: in RCA
Audio Output(s) 1 ch: out RCA
Display
8
Display Output Resolution Up to 4K

Live Display
8 ch: 1,4,8
16 ch: 1,4,8,9,16
Live Display Speed (Max) 8 ch: 240fps NTSC, 200PAL
16 ch: 480fps NTSC, 400PAL
OSD On/Off
System Navigation USB Mouse
Recording
Recording Resolution
4K (8MP), 5MP, 4MP, 3MP, 1080p, 720p
Recording Frame Rate 8/16ch: 4K@7fps; 5Mp@12fps;
4MP/3MP@15fps;
1080P@ 25/30fps (NTSC)
Recording Schedule Per Channel by, Continuous/
Motion/Advanced Motion (Person/
Vehicle)/Alarm/Day/Hour
Back-up File Format 
Video Compression H.265/H.264
Playback
Simultaneous Playback 8/16 ch: Up to 4 Channels
Playback Speed Variable Max 16×
Search By Time/Date, All Motion Events
or Smart Motion (Person/Vehicle),
Area Search (Smart Search)
Storage
Hard Drive Bays 1 Bay
Hard Drive Capacity Up to 1 × 10TB (SATA)
Backup Media USB Flash Drive & USB HDD
Special Features
Smart Motion Detection Person/Vehicle Smart Motion
Detection (enabled only on
channels 1-4)

Smart Search Yes
Third Party Integrations Google Assistant™, Amazon Alexa™
Smart Home
7
Voice Control Amazon Alexa, Google Assistant
Streaming Options Chromecast, Apple TV, Amazon
Echo Show, Google Home Hub
Connectivity
Mobile Viewing Android, iOS
Compatible APP Lorex Home™
PC/Mac Remote Viewing Yes/Lorex Home
 Text and Snapshot
Network Interface 10/100 Base-TX, RJ45
DDNS Yes (Optional)
USB interface USB 2.0 × 2
Additional Specications
FW Upgrade USB/Network
Watchdog Function Yes
Power Consumption < 10W (Excl. HDD)
Supply Voltage 12V/2A
Unit Dimensions
(W × D × H)
12.9 × 9.6 × 2.1” /
328 × 245 × 53mm
Unit Weight 2.75 lbs / 1.26Kg (Excl. HDD)
Operating Temperature 14° ~ 131°F / -10° ~ 55°C
Humidity 10 ~ 90% RH
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