This FAQ & Troubleshooting Guide covers the most common questions and installation issues for the Junction Box for MVF & Dual-Lens Cameras (JB302). Use it to confirm product compatibility, installation requirements, included hardware, load capacity, cable routing, product dimensions, and common setup issues when using the junction box with compatible Lorex MVF and dual-lens cameras and mounting accessories.
Need more details? Refer to the junction box’s Quick Start Guide, Specification Sheet, and the documentation for your compatible Lorex camera or mounting accessory.
TABLE OF CONTENTS
- Quick Fix Checklist (Start Here)
-
Troubleshooting
- Junction box does not fit the camera
- Mounting holes do not line up
- Junction box feels loose after installation
- Camera or accessory feels too heavy for the junction box
- Cable gland or plug does not fit
- Unused cable openings are exposed
- Installation surface is uneven or not secure
- Rust, corrosion, or wear is visible
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Frequently Asked Questions (FAQ)
- What is the JB302 used for?
- Which cameras is this junction box compatible with?
- How do I check compatibility?
- Does the camera attach directly to the junction box?
- How do I install the junction box?
- What is the maximum load capacity?
- What is the junction box made of?
- What color is the junction box?
- What are the product dimensions and weight?
- What comes in the box?
- What are the G3/4" openings used for?
- Do I need to use all cable openings?
- Can I install the junction box outdoors?
- Where should I install the junction box?
- Can this junction box be used with other mounting accessories?
- Do I need professional installation?
- Helpful Tips
Quick Fix Checklist (Start Here)
- Compatibility: Confirm that the junction box is compatible with your Lorex camera and mounting accessory at lorex.com/compatibility.
- Load capacity: The total installed weight must not exceed 8.82 lb / 4 kg.
- Surface strength: Confirm that the mounting surface can support the total weight of the junction box, camera, cabling, and any additional accessories.
- Hardware: Check that all included screws, anchors, caps, cable gland, O-ring, mounting plate / spacer, installation template, and Allen key are available before installation.
- Cable openings: Use the required cable opening and seal unused openings with the included plugs where applicable.
- Fit: Do not force the camera or accessory onto the junction box. If the mounting holes do not line up, confirm compatibility before continuing.
- Environment: Inspect the installation location for moisture, chemical exposure, salt air, vibration, or other conditions that may affect long-term mounting strength.
- Final check: After installation, confirm that all fasteners are tightened and the camera, cable gland, plugs, and junction box cover are secure.
Junction box does not fit the camera
- Confirm that you are using the correct product: Junction Box for MVF & Dual-Lens Cameras (JB302).
- Check compatibility at lorex.com/compatibility before installation.
- Make sure the camera and mounting accessory are listed as compatible with the junction box.
- Confirm that the correct mounting holes are being used for your camera model.
- Do not drill, modify, or force the junction box to fit an incompatible camera or accessory.
- If the camera does not fit, stop installation and confirm the correct accessory combination for your camera model.
Mounting holes do not line up
- Make sure the junction box is positioned in the correct orientation before securing it to the surface.
- Use the included installation template to mark the correct mounting holes.
- Confirm that the correct compatible camera or accessory is being attached to the junction box.
- Loosely position all screws first, then tighten them evenly after alignment is confirmed.
- If the holes still do not align, stop installation and recheck product compatibility.
Junction box feels loose after installation
- Confirm that all screws and anchors are fully tightened.
- Check that the correct included hardware was used where applicable.
- Make sure the mounting surface is strong enough to support the installed equipment.
- If installing into masonry, brick, concrete, wood, or another surface type, use fasteners appropriate for that material.
- Do not install the junction box on weak, damaged, unstable, or unsuitable surfaces.
- Remove the camera and reinstall the junction box if movement remains after tightening.
Camera or accessory feels too heavy for the junction box
- The junction box supports a maximum load of 8.82 lb / 4 kg.
- Confirm the combined weight of the camera, cabling, and any attached accessories.
- Do not exceed the maximum load capacity.
- Make sure the wall, ceiling, or mounting surface can support the total installed weight.
- If the installed product feels unstable, remove it immediately and verify compatibility, surface strength, and fastener installation.
Cable gland or plug does not fit
- Confirm that the cable gland and plugs are installed into the correct threaded openings.
- The junction box includes G3/4" cable openings for cable routing.
- Make sure the O-ring is seated correctly when installing the cable gland.
- Do not cross-thread or force the cable gland or plug into the opening.
- If the cable gland or plug does not thread smoothly, remove it and reinstall it carefully.
Unused cable openings are exposed
- The junction box includes multiple pipe-thread cable openings.
- Use the required opening for cable routing.
- Install the included plugs into unused openings where applicable.
- Do not leave unused openings exposed in outdoor or moisture-prone installations.
- Check that all cable openings are sealed before completing installation.
Installation surface is uneven or not secure
- Install the junction box only on a stable surface that can support the total installed weight.
- Avoid installing on loose siding, damaged masonry, thin panels, or other surfaces that may shift or weaken over time.
- Use fasteners suitable for the surface material.
- If the wall, ceiling, or mounting surface is uneven, cracked, or not structurally sound, choose another installation location.
- For commercial installations, consult a qualified installer if surface strength is uncertain.
Rust, corrosion, or wear is visible
- Inspect the junction box regularly, especially in harsh environments.
- Installations near salt water, chemical plants, industrial areas, or high-humidity environments may require more frequent inspection.
- Check for loose fasteners, corrosion, cracking, deformation, water intrusion, or other signs of wear.
- Replace the junction box or hardware if strength or stability appears compromised.
- Do not continue using the junction box if the camera or accessory is no longer securely supported.
What is the JB302 used for?
The Junction Box for MVF & Dual-Lens Cameras (JB302) is used for cable management and mounting support with compatible Lorex MVF and dual-lens cameras.
It helps protect and organize cable connections while providing a secure mounting point for compatible camera installations.
Which cameras is this junction box compatible with?
The Junction Box for MVF & Dual-Lens Cameras (JB302) is compatible with select Lorex MVF cameras, dual-lens cameras, and mounting accessories.
Because compatibility may vary by camera model and accessory combination, always confirm the correct mounting path before installation at lorex.com/compatibility.
How do I check compatibility?
For the most up-to-date compatibility information, visit lorex.com/compatibility.
Does the camera attach directly to the junction box?
Yes, compatible cameras can attach to the junction box using the appropriate mounting holes and included hardware.
Depending on the camera model and installation type, the junction box may also be used with another compatible mounting accessory. Check the compatibility page before installation to confirm the correct accessory combination.
How do I install the junction box?
Refer to the installation diagram below for the recommended installation steps.
What is the maximum load capacity?
The maximum load capacity is 8.82 lb / 4 kg.
This means the total weight of the installed camera and any attached accessories must not exceed 8.82 lb / 4 kg. The mounting surface must also be strong enough to support the total installed weight.
What is the junction box made of?
The junction box is made of aluminum alloy and plastic.
What color is the junction box?
The Junction Box for MVF & Dual-Lens Cameras (JB302) is black.
What are the product dimensions and weight?
- Product dimensions: Ø5.58 × 2.00 in (Ø141.8 × 51 mm)
- Product weight: 0.66 lb / 0.58 kg
- Operating humidity: ≤ 90% RH
What comes in the box?
- 8× Screws
- 4× Expansion wall plugs
- 2× Seal rings
- 2× Plastic screw caps (white, slotted)
- 1× Plastic mounting plate/spacer (white, round)
- 1× Cable gland threaded with O‑ring
- 1× Allen key
What are the G3/4" openings used for?
The G3/4" openings are used for cable routing through the junction box.
Use the cable opening that best fits the installation, then seal unused openings with the included plugs where applicable.
Do I need to use all cable openings?
No. Use only the cable opening required for your installation.
Unused openings should be sealed with the included plugs where applicable to help protect the cable area from dust, debris, and moisture.
Can I install the junction box outdoors?
The junction box is intended for use with compatible outdoor security camera installations when installed correctly with compatible Lorex cameras and accessories.
Make sure the mounting surface, cable openings, plugs, cable gland, camera, and accessories are suitable for the environment. Inspect the installation regularly in high-humidity, coastal, industrial, or corrosive environments.
Where should I install the junction box?
- Choose a structurally sound wall, ceiling, or accessory mounting surface that can support the total installed weight.
- Position the junction box so the camera can cover the intended viewing area.
- Plan cable routing before drilling or fastening the junction box.
- Avoid locations where the junction box or camera may be struck, loosened, or exposed to excessive vibration.
- For outdoor installations, choose a sheltered location where possible to help protect the camera, cables, and mounting hardware.
Can this junction box be used with other mounting accessories?
Yes. The junction box may be used as part of a compatible accessory mounting path depending on the camera model and installation type.
For wall, pole, corner, or other accessory installations, confirm the correct accessory combination at lorex.com/compatibility before installation.
Do I need professional installation?
Professional installation is recommended if you are unsure whether the mounting surface can support the total installed weight, if special fasteners are required, or if the installation is in a commercial, industrial, high-traffic, or hard-to-reach location.
Helpful Tips
- Confirm compatibility before opening the installation hardware or drilling mounting holes.
- Use the installation template to help mark mounting holes accurately.
- Plan cable routing before securing the junction box.
- Seal unused cable openings with the included plugs where applicable.
- Make sure the cable gland and O-ring are properly seated before completing installation.
- Check the total installed weight of the camera and any attached accessories before installation.
- Do not exceed the maximum load capacity of 8.82 lb / 4 kg.
- After installation, gently check that the junction box and attached camera or accessory are secure.
- Inspect the junction box periodically, especially in outdoor, coastal, high-humidity, or corrosive environments.
- Keep the Quick Start Guide and compatibility information available for future service or accessory changes.