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This article answers the most common questions about the E831CB Series - 4K IP PoE Wired Bullet Camera. For step-by-step installation, setup, and troubleshooting, visit the Installation Guide and Troubleshooting Guide.
TABLE OF CONTENTS
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Setup and Installation Questions
- How do I reset the camera?
- Where is the microSD card slot and how do I use it?
- How do I install the camera correctly?
- How do I connect the camera to the NVR?
- Can I use a PoE switch instead of direct connection to the NVR?
- What power options are available?
- How can I optimize camera placement?
- Which recorders work with this camera?
- App and Control Questions
-
Performance and Technical Questions
- What is the maximum resolution and frame rate?
- What is the camera’s field of view?
- How far does night vision reach?
- Why is my image too bright or too dark?
- Why am I receiving false motion alerts?
- Can I store footage locally on the camera?
- Can this camera integrate with smart home systems?
- What is the operating temperature and weather rating?
- How do I clean and maintain the camera?
- Where can I find firmware, manuals, and technical support?
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Setup and Installation Questions
How do I reset the camera?
The reset button is located on the underside of the camera, inside the small RESET / microSD compartment directly above the speaker area.
- Make sure the camera is powered on (connected via PoE or 12V DC).
- Locate the metal compartment cover on the bottom of the camera labeled RESET / microSD.
- Remove the two screws on either side of the cover using a small screwdriver.
- Lift the cover to expose the reset pinhole button.
- Insert a pin or paperclip and press and hold for 10 seconds until you hear an audio prompt.
- Release the button and wait about 1-2 minutes for the camera to reboot and reconnect to your NVR.
- Reattach the compartment cover securely to preserve the IP67 weather resistance.
This restores all camera settings to factory defaults, including network configuration and user credentials.
Where is the microSD card slot and how do I use it?
The microSD card slot is located inside the same compartment as the reset button, on the bottom of the camera.
- Remove the RESET / microSD compartment cover (secured with two screws).
- Insert a Class 10 or higher microSD card (up to 256 GB) with the label facing outward.
- Push until it clicks into place. The camera automatically detects and formats the card when powered on.
- After installation, replace the cover and screws tightly to maintain the weather seal.
How do I install the camera correctly?
- Mount 10 ft (3 m) above ground level, angled ≈ 15° downward for facial-level coverage.
- Ensure the surface can support 3 × the camera weight (2.4 lb / 1.08 kg).
- Use the supplied mounting template and weather-resistant RJ45 cap; seal with silicone if outdoors.
- For detailed cabling diagrams, see the Installation Guide.
How do I connect the camera to the NVR?
- Connect the camera to a PoE port on the N831 NVR using Cat5e or Cat6 cable (max length 300 ft / 90 m).
- The camera powers on automatically via PoE and appears on screen within 60 seconds.
- If not detected, open Main Menu > Camera > Device Search to add it manually.
Can I use a PoE switch instead of direct connection to the NVR?
Yes, any IEEE 802.3af-compliant PoE switch works. Ensure the switch and NVR are on the same network subnet.
What power options are available?
The E831CB supports two power methods:
- Power over Ethernet (PoE): IEEE 802.3af, 8.2 W maximum draw (recommended).
- 12 V DC Input: Requires a regulated power supply (not included).
How can I optimize camera placement?
- Cover entry points (doors, driveways, windows) first.
- Avoid bright light sources or mirrored surfaces in frame.
- Angle the camera so its IR LEDs are not reflecting off walls or eaves.
- Follow privacy regulations in your region. Avoid aiming into neighbors’ property.
Which recorders work with this camera?
The E831CB is compatible with Lorex 4K NVRs such as the N831 Series. Consult the Compatibility Chart for updates on supported models.
App and Control Questions
How do I access footage on my phone?
- Download the Lorex Connect App from the App Store or Google Play.
- Log in or create an account.
- Tap + add device and select Recorder.
- After adding the recorder, tap the camera feed to view live or recorded video.
More details: Lorex Connect - Getting Started and Live View & Playback.
How do I enable and adjust audio?
The E831CB includes a built-in microphone and speaker for two-way audio.
- On the NVR: Go to Main Menu > Record > Encode > Channel > Enable Audio.
- On the app: Tap the Talk icon for real-time two-way communication.
How do I configure motion and AI detection?
- Go to Main Menu > Configuration > Event > Detection Type.
- Select Person and Vehicle to filter AI events.
- Draw custom motion zones and set sensitivity levels (1-8).
- Save and test the camera under real-world conditions.
For more on detection settings, see Lorex Connect - Motion & AI Detection.
How do I schedule recordings?
- On the NVR, go to Encode & Record > Schedule.
- Choose Continuous or Motion Detection mode.
- Add time blocks for desired days and save the schedule.
How do I update firmware?
Keep both the camera and NVR firmware current for best performance:
- Open Main Menu > Configuration > System > Maintenance > Upgrade on the NVR or update through the Lorex Connect App.
- Reboot devices after installation to reinitialize AI and IR functions.
Performance and Technical Questions
What is the maximum resolution and frame rate?
4K Ultra HD (3840 × 2160 pixels) at 15 frames per second with H.265 compression.
What is the camera’s field of view?
Horizontal 111°, Vertical 59°, Diagonal 135° - using a fixed 2.8 mm F1.6 lens.
How far does night vision reach?
Infrared (IR) range up to 82 ft (25 m) in complete darkness. For color night vision, maintain minimal ambient light.
Why is my image too bright or too dark?
- Enable DWDR (Digital Wide Dynamic Range) to balance exposure.
- Avoid pointing directly at light sources (sun or spotlights).
- Adjust brightness and contrast via the NVR menu.
Why am I receiving false motion alerts?
- Lower sensitivity levels under Detection Settings.
- Redraw motion zones to exclude trees, roads, or reflections.
- Limit alerts to Person & Vehicle AI detection only.
Can I store footage locally on the camera?
Yes, the camera includes a MicroSD card slot for independent recording (up to 256 GB, sold separately). Recordings can be viewed through a web browser but are not synced to the NVR or cloud.
Can this camera integrate with smart home systems?
Integration options depend on the connected NVR model. Refer to the N831 Specification Sheet for Google Assistant or Alexa compatibility details.
What is the operating temperature and weather rating?
Operating range: −31 °F to 140 °F (−35 °C to 60 °C). Rated IP67 for indoor/outdoor use. Weather-resistant but not submersible. Install in a sheltered location when possible.
How do I clean and maintain the camera?
- Wipe the lens with a soft microfiber cloth. No chemical cleaners.
- Remove dust, rain spots, or spiderwebs regularly for clear night vision.
- Inspect mounting screws and cables periodically for weather wear.
Where can I find firmware, manuals, and technical support?
Visit the official E831CB Support Page for downloads.