- Sku: DH-AC-PFA139
- Vendor: SecurityAustralia
Dahua DH-AC-PFA139 Water-proof Junction Box
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The Dahua PFA139 delivers a weatherproof cable management solution for installers mounting bullet or dome cameras on walls and ceilings. Built from aluminium with a rated operating range of -40°C to +60°C, it conceals and protects wiring connections while maintaining a clean finish. Compatible with M20 (G1/2") conduit thread for straightforward integration with standard cable runs.
Why This Model
- Aluminium construction: More durable than plastic alternatives, the aluminium body resists impact and corrosion in exposed outdoor environments over the long term.
- Wide temperature tolerance: Rated from -40°C to +60°C, it performs reliably across Australia's full climate range - from alpine conditions to rooftop installations in extreme heat.
- M20 conduit thread: Standard G1/2" threading integrates directly with common conduit and cable glands, avoiding the need for adaptors during installation.
| Model | DH-PFA139 |
| General | |
| Material | Aluminum |
| Dimension | 108.0mmx28.5mm (4.25”x1.12”) |
| Inch Thread | M20(G1/2”) |
| Load Bearing | 1.0kg(2.2lb) |
| Weight | 0.16kg(0.35lb) |
| Color | White |
| Operating Temperature | -40℃~+60℃ (-40℉~+140℉) |
| Humidity | <90% RH |
All IP cameras and recording devices (NVR’s/DVR’s) are covered by a 3 year back-to-base manufacturer warranty.
Our warranty is limited to the replacement of faulty items or parts and does not include damage due to incorrect fitting of parts or accessories, or damage due to mishandling the equipment once out of the box. All faults are sent to the manufacturer for inspection and diagnosis before a replacement is sent out.
Read more about the Terms & Conditions here – https://www.securityaustralia.com.au/terms-and-conditions/
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Despatch Times: Products are despatched on the same day if the order was placed before 11am on any weekday, Monday - Friday. All other orders are processed and despatched within 24 hours or next business day.
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Shipping Times: General shipping times for StarTrack, TNT and Allied couriers are between 1-3 working days from despatch. Longer delivery times may be caused by your package being held at your local courier depot that is beyond our control. Please contact us or the local post depot for confirmation.
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Dahua DH-AC-PFA139 Water-proof Junction Box
Model: DH-AC-PFA139
Who This Is For
Property managers specifying tidy, weatherproof camera installs will find the Dahua PFA139 Junction Box a practical addition to any bullet or turret camera deployment. Designed to conceal and protect cable terminations at the mounting point, this aluminium junction box sits between the camera base and the wall or ceiling surface, keeping conduit entries, cable joins, and wire tails out of sight and shielded from moisture and dust. It suits both indoor and outdoor locations, with an operating temperature range of -40°C to +60°C making it suitable across Australian climates from alpine to tropical. Installers working on commercial facades, carpark structures, or eave-mounted camera runs frequently add this box to improve cable management presentation and protect terminations that would otherwise be exposed. At 108mm x 28.5mm and just 160 grams, it adds minimal bulk while giving the finished installation a cleaner, more professional appearance.
What This Product Actually Does
Weatherproof Cable Protection
The aluminium housing seals around cable entry points at the camera mount, keeping moisture, dust, and insects away from terminations. This is particularly relevant for outdoor installations where exposed cable joins degrade over time and can cause intermittent faults.
Wide Temperature Tolerance
Rated from -40°C to +60°C, this junction box holds up in harsh Australian environments - whether that is direct sun on a north-facing wall in summer or cold overnight temperatures in elevated or inland locations where camera hardware is typically installed year-round.
Standard M20 Thread Compatibility
The M20 (G1/2") inch thread aligns with the standard conduit and cable gland sizing used across most commercial CCTV installations, making this a straightforward fit when integrating with existing conduit runs rather than requiring specialist fittings.
Neat Finished Appearance
The white aluminium finish and compact 108mm x 28.5mm profile sits flush against wall and soffit surfaces, eliminating the visible cable slack or PVC conduit elbows that can make an otherwise clean camera install look unfinished - relevant for retail, office, and body corporate environments.
Lightweight Aluminium Construction
At 160 grams with a 1.0kg load-bearing rating, the PFA139 is rigid enough to provide structural support at the camera mount point without adding meaningful weight to the installation. Aluminium also resists corrosion in coastal and high-humidity environments where steel alternatives can deteriorate.
Who Buys This Model
- CCTV Installers: Adding junction boxes per camera to meet tidy cable management requirements on commercial sites where exposed terminations fail building or body corporate standards.
- Facility Managers: Replacing deteriorated or missing junction boxes on existing outdoor camera installations where cable entry points have been left exposed to weather.
- Strata and Body Corporate Managers: Specifying a neat, white-finish accessory that matches camera housings on rendered or painted external walls without requiring custom covers or conduit work.
- Security System Integrators: Bundling junction boxes with camera orders on multi-site rollouts where consistent installation presentation and weatherproof cable protection is specified by the end client.
Honest Assessment
The PFA139 does a straightforward job well. The aluminium construction, wide temperature tolerance, and standard M20 thread make it a practical add-on for outdoor camera installs where bare cable exits through a wall or soffit would otherwise be left unprotected. The compact dimensions and white finish suit most standard camera deployments without drawing attention to the mounting point. It also adds a small measure of physical protection to the cable tail at the most vulnerable point - the wall entry - which matters in areas with UV exposure, driving rain, or pest pressure. Where it will not help is in scenarios requiring large cable bundles, multi-core conduit entries, or significant junction space for connectors and splices - for those situations, a full-size surface-mounted enclosure is the more appropriate solution. The PFA139 is stocked by Security Australia and is typically ordered alongside bullet, turret, or dome cameras as a per-camera line item rather than a standalone purchase.
Before You Buy
Installer Note: The PFA139 is designed for use with Dahua cameras that have a compatible base footprint and M20 cable entry. Before ordering, confirm your camera model accepts this junction box in Dahua's accessory compatibility documentation - not all turret and bullet models share the same base plate dimensions. If you are running armoured cable or conduit larger than G1/2", the M20 thread on this box will not accept standard locknuts for that conduit size, and you will need to account for an adapter or alternative entry method.
Quick Fit Check
- Good match if: You are mounting a compatible Dahua bullet or turret camera on an external wall and want a weatherproof, tidy cable entry point that handles temperatures from -40°C to +60°C without a separate conduit elbow or surface box.
- Good match if: The install site has aesthetic requirements - such as a painted render, tiled fascia, or a body corporate standard - where exposed cables or bulk conduit fittings are not acceptable and the white aluminium finish of the PFA139 matches the camera body colour.
- You may need a different model if: Your installation requires housing for cable splices, terminal blocks, or multiple cable entries - a larger surface-mounted weatherproof enclosure from the accessories range at securityaustralia.com.au will be more appropriate for that application.
Key Features & Technical Specifications
Real-World Scenarios
How It Compares
- Choose this if: You need a low-profile, weather-resistant cable cover that sits neatly at the camera mount point with a white aluminium finish and standard M20 conduit thread - particularly on Dahua cameras where the base footprint is compatible.
- You may need a different model if: Your installation requires space for cable splices, connectors, or terminal blocks at the mount point - a larger weatherproof surface enclosure from the accessories range at securityaustralia.com.au will provide the internal volume those applications need.
- Pairs well with: Dahua bullet cameras, turret cameras, or any compatible Dahua outdoor camera that mounts directly to a wall or soffit surface and requires a weatherproof cable entry point.
Common Questions
-
Will this junction box work with any Dahua camera?
Not universally - compatibility depends on the camera's base plate dimensions and mounting footprint. The PFA139 is designed to suit specific Dahua camera models, and Dahua's accessory compatibility documentation should be checked before ordering. Cameras with a matching base and M20 cable entry are the right application; cameras with significantly different base dimensions or larger cable entry requirements may not align correctly. -
Is the PFA139 suitable for outdoor installation in Australian conditions?
Yes. The operating temperature range of -40°C to +60°C covers all Australian climatic conditions including high summer surface temperatures on north-facing walls, and the aluminium construction resists UV degradation and corrosion. Humidity tolerance of less than 90% RH accommodates tropical and coastal environments. The junction box is designed specifically for outdoor use. -
What conduit size does the M20 thread accept?
The M20 thread corresponds to G1/2" conduit, which is the most common conduit size used in standard CCTV cable runs. If your installation uses a larger conduit size - such as 25mm or 32mm conduit for multi-core runs - a conduit adapter or separate cable gland arrangement will be required, as the PFA139's single M20 entry point does not accommodate larger conduit directly. -
Does the junction box provide enough load capacity to support the camera weight?
Yes, for typical Dahua bullet and turret cameras. The PFA139 has a load-bearing rating of 1.0kg (2.2lb), which covers most compact outdoor Dahua cameras. However, this junction box is not a structural mount - the camera is fixed to the wall or surface through the junction box base, not supported by the box itself. Always confirm the primary wall fixings are appropriate for the camera's weight independent of the junction box. -
Can this junction box be used for cable splicing or joining?
No. The PFA139 is a cover-type junction box with minimal internal volume - it is designed to neaten and protect the cable exit at the camera mount, not to house connectors, terminal blocks, or cable joins. At 108mm x 28.5mm overall, there is no meaningful working space inside. For installations that require accessible cable joins at the camera location, a larger surface-mounted weatherproof enclosure is the correct product. The range available through Security Australia includes options suited to those applications. -
Does the white colour hold up over time outdoors?
Generally yes. The aluminium construction does not fade or crack the way painted plastic housings can over extended outdoor exposure. Aluminium does not hold paint the same way as plastic, and the white finish on the PFA139 is typical of anodised or powder-coated aluminium accessories - which hold colour well under UV exposure. Coastal salt environments may cause minor surface oxidation over many years, but this does not affect function and is slower to develop than on comparable steel accessories.
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