- 4K (8MP) Analog HD cameras are required to take advantage of 4K recording.
- Requires a high-speed internet connection and a router (not included) for remote access. A minimum upload speed of 5Mbps is required for the best video performance. Up to 3 devices may connect tothe system at the same time. For the latest list of supported apps and devices, please visit: www.lorex.com/support
- Both firmware and software must be updated to latest version to ensure remote connectivity.
- Person/Vehicle Advanced Motion Detection can be enabled only on channels 1-4. General motion detection will still be available on all remaining channels. Accuracy of Person/Vehicle Advanced MotionDetection will be influenced by multiple factors.
Protect what matters most with this 8-camera 4K DVR security system from Lorex. Each camera features Active Deterrence LED motion lights and warning sirens designed to stop events before they happen. They also feature 2K resolution recording, Color Night Vision and IP67-rated weatherproof exteriors to ensure top quality security video year-round. The DVR features its own secure local storage, which means there are no monthly fees, and is easily connected to the Lorex app for convenient on-the-go remote connection.

2K Analog Active Deterrence Security Cameras
Active deterrence security coverage, day or night
Learn MoreIt is capable of recording a 5MP resolution of 2592 × 1944 - that's more than 2× the amount of pixels of 1080p.
See full color with the help of ambient lighting or long-range infrared night vision in low-light settings.
Metal exteriors provide year-round protection from the elements.
Greet uninvited guests with a motion-activated LED light and a remote-activated siren, designed to deter potential intruders.

4K 8-Channel Digital VIdeo Recorder
Record 4K security video and experience the latest in smart innovations to provide the highest level of security for your property.
Learn MoreA 1TB or 2TB security-grade hard drive keeps your data safe and local. This DVR can be upgraded to 8TB of space.
This DVR is able to receive HEVC (High Efficiency Video Encoding) or H.265 video compression files. This type of encoding can save up to 40% more space when compared to H.264 Advanced Video Coding.
Stop events before they happen. An easy-to-use panic button located on the front of the recorder will activate all lights and sirens on your compatible Active Deterrence cameras to deter potential intruders.
Be alerted when motion is detected on your property with advanced motion detection capabilities. This system features person/vehicle detection on 4 channels to reduce unnecessary alerts and false alarms



Smart home compatibility
Get faster access to you security system with hands-free voice control. Use simple voice commands to activate camera features with Amazon Alexa™ and Google Assistant™. Use it with Chromecast or Firestick to monitor your security camera footage on a larger screen. For more information about current smart home integrations, visit our Smart Home Guide.

Remote viewing from your mobile with Lorex™
This DVR is designed for use with our innovative Lorex™ app. Using this app, you can quickly view your security system remotely and control camera features from your smartphone. The app will also send you motion-activated push notifications straight to your phone to keep you connected to your property at all times.
What's Included?
- View video with more than twice the resolution of 1080p
- 98° Field of View (horizontal)
- Experience enhanced nighttime clarity and better video evidence with Color Night Vision™ (ambient lighting required)
- Up to 135ft (41m) IR night vision in low light and 90ft (28m) in total darkness1
- Motion-activated LED warning light
- Take intruders by surprise and alert nearby neighbours with a remote-activated warning siren
- Weatherproof rated (IP67)
- Operates in temperatures low as -40°F (-40°C) and high as 131°F (55°C)
- Durable camera housing, designed to withstand harsh weather conditions
Each C581DA Includes:
- Stated IR illumination range is based on ideal conditions in typical outdoor nighttime ambient lighting and in total darkness. Actual range and image clarity depends on installation location, viewing area, and light reflection / absorption level of object. In low light, the camera will switch to black and white.
- Full color nighttime video typically switches to black & white IR night vision below 1 lux to ensure optimal low-light image quality.
- Compatible with select Lorex analog HD recorders. For a full list of compatible recorders visit: www.lorex.com/compatibility
- Not intended for submersion in water. Installation in a sheltered area recommended.
- Capable of recording up to 4K (8MP) Ultra HD Resolution on all cameras1
- Digitally zoom in on distant objects for better clarity
- Expand your security system with both 8 and 16 channel recorder options
- Quickly access footage and features with simple voice commands (Compatible with: Amazon Alexa and Google Assistant)7
- View live or recorded video directly on your TV with smart home compatibility (Compatible with: Chromecast)
- Reduce unnecessary alerts and false alarms with advanced motion detection8
- Get push notifications when motion from a person/vehicle is detected6 (Available on up to 4 channels)
- Use Smart Search to filter motion events for reviewing footage quickly and easily
- A panic button is located on the recorder to activate all lights and sirens on your cameras4
- Local built-in security-grade hard drive ensures only you can access your footage
- Ample storage space with no monthly cloud fees
- Heavy-duty hard drive designed to handle the workload of 24/7 monitoring
Each D841B Includes:
Product Support
C581DA - 2K Analog Active Deterrence Camera
D841 Series - 4K Digital Video Recorder
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