D841 Series
4K DVR with Advanced Motion Detection
Works with: 
Model Numbers: D841A81B, D841A81, D841A82B, D841A82
Whether you're upgrading an existing video recorder or thinking of purchasing a whole new Analog HD system, this latest 4K Ultra HD digital video recorder by Lorex meets all the demanding needs of modern-day security. Features such as 4K recording resolution produce visually accurate video footage with exceptional detail. Along with 4K recording, advanced person/vehicle detection, and smart home compatibility, this DVR combines active security with the convenience of hands-free voice control.
Support Articles:
Installation Guides
Port Forwarding: SetupTroubleshooting Guides
DVR / NVR: System not turning on DVR / NVR: System not turning on after being moved / bumped / dropped USB Device: Not detected Hardware: DVR / NVR fan is loud Error Message: Network Connection Failed Email: Not receiving email notifications when using personal email DVR / NVR - How to manually upgrade the firmware of your recorderApp Downloads:
Product Guides & Downloads:
D841B Remote Access Guide (EN)
(376 KB) - PDF
D841B Remote Access Guide (FR)
(379 KB) - PDF
D841B Remote Access Guide (ES)
(380 KB) - PDF
D841 Series Black Datasheet
(EN)
(1.2 MB) - PDF
D841B Quick Start Guide (EN)
(2.22 MB) - PDF
D841B Quick Start Guide (FR)
(2.15 MB) - PDF
D841B Quick Start Guide (ES)
(2.16 MB) - PDF
Manual D841 Series 4K Security DVR English
(EN)
(2.68 MB) - PDF
Manual D841 Series 4K Security DVR French
(2.72 MB) - PDF
Manual D841 Series 4K Security DVR Spanish
(EN)
(2.72 MB) - PDF
