Product Overview
Transit operators and rail system integrators working to EN50155 certification requirements will find the AXIS P3947-R M12 built specifically for the demands of onboard vehicle surveillance. This 5MP indoor dome camera is engineered to meet EN50155 and EN45545 transportation standards, covering trains, trams, and light rail carriages where certification, impact resistance, and operational temperature range all matter as much as image quality. Featuring a 3.6mm M12 lens with a horizontal field of view of approximately 99 degrees, the camera delivers 5MP resolution at up to 60 fps with Lightfinder 2.0 and Forensic WDR for consistent detail in the variable and often low-light conditions common inside vehicle interiors. It also integrates the CV75 deep learning chipset, Axis Edge Vault hardware cybersecurity, and IK10 vandal resistance with IP66 and IP67 sealing. It is well suited to certified rail, tram, and transit deployments where off-the-shelf CCTV cameras simply do not meet the required standards.
Key Capabilities
EN50155 and EN45545 Transportation Certification
The P3947-R M12 complies with EN50155 for rolling stock electronics and EN45545 for rail fire safety. These certifications are mandatory for many public transit procurement contracts and cannot be approximated by standard commercial cameras regardless of their IP or IK ratings.
5MP Resolution at 60 fps
With a maximum resolution of 2592 x 1944 at up to 60 frames per second, the camera captures clear detail of passengers and incidents in fast-moving environments. High frame rates reduce motion blur during vehicle acceleration and braking, which is critical when reviewing footage for incident investigations.
Lightfinder 2.0 and Forensic WDR
Without built-in IR, the camera relies on ambient interior lighting. Lightfinder 2.0 delivers colour detail at as low as 0.16 lux, while Forensic WDR handles the high-contrast conditions caused by sunlight entering carriage windows, keeping both bright and shadowed areas usable in the same frame.
IK10 Vandal Resistance with IP66 and IP67 Sealing
The dome housing is rated IK10 against mechanical impact and sealed to both IP66 and IP67, making it resistant to the physical abuse and moisture ingress that passenger-facing cameras frequently encounter. This suits overhead mounting in carriage interiors where cleaning and accidental contact are routine.
CV75 Deep Learning Chipset and ACAP Support
The onboard CV75 chipset enables deep learning-based analytics and supports the Axis Camera Application Platform, allowing operators to deploy third-party or Axis-developed analytics applications directly on the camera without requiring a separate server for processing.
Axis Edge Vault Hardware Cybersecurity
Axis Edge Vault provides hardware-based protection for device credentials and cryptographic keys, complementing HTTPS encryption, IEEE 802.1X network access control, and a signed operating system. This level of cybersecurity is increasingly required in public transport and government-operated transit environments.
Best For
- Certified Rail and Tram Deployments: EN50155 and EN45545 compliance makes this camera appropriate for public transit contracts where certification is a procurement requirement, not just a preference.
- Carriage Interior Overhead Mounting: The dome form factor and IK10 housing suit ceiling-mounted installation in passenger areas, where the low profile reduces snagging and the vandal-rated cover withstands deliberate contact.
- Wide Operating Temperature Environments: With a confirmed operating range of -30 to 55 degrees Celsius, the camera functions through extreme seasonal temperature swings common in Australian and international rail networks.
- Fleet Upgrade Projects Using Existing Axis Backplates: The P3947-R M12 shares the same backplate, mounting footprint, and accessories as other Axis onboard cameras, enabling like-for-like camera upgrades across a fleet without new drilling or recabling.
Why Choose the AXIS P3947-R M12
The AXIS P3947-R M12 addresses a narrow but non-negotiable requirement: certified onboard surveillance for rolling stock. Standard commercial cameras, even those with high IP ratings and strong image specs, cannot meet the EN50155 electrical and mechanical requirements that transit authorities mandate. This model does. The 5MP sensor running at 60 fps, combined with Lightfinder 2.0 at 0.16 lux minimum illumination, means the camera performs in carriage lighting conditions without relying on infrared. The M12 lens mount is inherently more vibration-resistant than standard CS or C mounts, which matters in a vehicle environment. Axis Edge Vault cybersecurity and a signed operating system go beyond what most transit-grade cameras offer at this resolution. The shared backplate design also gives fleet operators a practical upgrade path without structural rework. Available at Security Wholesalers, the P3947-R M12 is a purpose-built option for transport and infrastructure projects with specific certification and durability requirements.
Buyer Decision Tips
Lighting Planning: The P3947-R M12 has no built-in IR illuminator. Its performance depends entirely on ambient or installed carriage lighting. At 0.16 lux minimum illumination with Lightfinder 2.0, it handles most lit interior environments, but if carriages are poorly lit at night or in tunnels with no supplementary lighting, you will need to plan for auxiliary lighting at the installation stage rather than relying on the camera itself to compensate.
Field of View and Digital Zoom: The fixed 3.6mm lens delivers approximately 99 degrees horizontal field of view, which covers a standard carriage aisle or entry zone well but cannot be physically adjusted after installation. Digital pan, tilt, and zoom are available for stream configuration, but these work within the captured image and do not replace optical zoom. If you need to cover a longer carriage bay or a narrower corridor from a single camera, confirm coverage geometry before specifying quantity.
Key Features & Technical Specifications
| Brand |
Axis Communications |
| Model |
AXIS P3947-R M12 3.6 mm |
| SKU |
03381-001 |
| Resolution |
5 MP |
| Max Video Resolution |
2592 x 1944 |
| Max Frame Rate |
60 fps |
| Lens Mount |
M12 |
| Focal Length |
3.6 mm |
| Aperture |
F2.0 |
| Horizontal Field of View |
Approximately 99 degrees |
| Minimum Illumination (Colour) |
0.16 lux |
| IR Illumination |
None |
| Video Compression |
H.265, H.264 (High/Main), Zipstream |
| IP Rating |
IP66, IP67 |
| IK Rating |
IK10 |
| Power |
PoE Class 2 |
| Operating Temperature |
-30 to 55 degrees Celsius |
| Transportation Certifications |
EN50155, EN45545 |
| Cybersecurity |
Axis Edge Vault, HTTPS encryption, IEEE 802.1X, Signed OS |
| Local Storage |
microSDXC compatible |
| Audio |
Built-in microphone; external audio input supported |
| Analytics Platform |
AXIS Camera Application Platform (ACAP); CV75 Deep Learning Chipset |
Ideal Use Cases
Train Carriage Interiors
EN50155 certification and the IK10 dome housing make this camera directly suitable for ceiling-mounted installation inside passenger rail carriages, where compliance with rolling stock standards and resistance to deliberate impact are both required.
Tram and Light Rail Vehicles
The -30 to 55 degree Celsius operating range and EN45545 fire safety compliance make the P3947-R M12 appropriate for tram networks operating across varied climatic conditions, including outdoor-to-indoor transitions with temperature differentials.
Fleet Upgrade Projects
The shared Axis onboard backplate and accessory system allows this model to replace older Axis cameras on existing vehicle mounts without new drilling, reducing installation time and cost across large fleet upgrade programs.
Covered Transit Platforms and Waiting Areas
Where covered platforms and station waiting areas have overhead lighting but no infrared requirement, the 0.16 lux Lightfinder 2.0 performance delivers consistent colour footage in the low ambient light conditions typical of undercover station infrastructure.
Government and Public Transport Authority Contracts
Procurement contracts for public transport surveillance frequently require documented certification compliance, hardware cybersecurity standards, and audit-ready footage. The P3947-R M12 addresses each of these requirements with confirmed and published specifications.
Choosing the Right Model
- Choose this model if: Your project requires EN50155 or EN45545 certification, the installation is in a vehicle interior or transit environment with controlled lighting, and you need 5MP resolution at 60 fps with hardware-level cybersecurity and IK10 vandal resistance in a dome housing.
- Choose a different model if: Your installation is in a standard indoor or outdoor commercial location with no transportation certification requirement, in which case a non-transport-rated dome or turret camera at a lower cost will cover the same resolution and protection class without the rail-specific compliance overhead.
- Choose a different model if: Your location is unlit or relies on infrared coverage after dark. The P3947-R M12 has no built-in IR and depends on ambient lighting. A model with integrated infrared illumination would be more appropriate for dark or unlit spaces.
FAQs
- Does the AXIS P3947-R M12 actually comply with EN50155, or is it just rated for general outdoor use?
This model is confirmed to comply with EN50155, which covers electronic equipment used on railway rolling stock, and EN45545, which addresses fire safety for railway applications. These are formal transportation certifications documented in the Axis product datasheet, not general environmental ratings.
- How does the camera perform in a carriage without IR when lights are dimmed or off?
The P3947-R M12 uses Lightfinder 2.0 to capture colour footage at a minimum illumination of 0.16 lux. In carriages where lighting is dimmed rather than fully off, it maintains usable footage. In a completely dark environment with no ambient light source, the camera cannot produce a usable image as there is no built-in IR to compensate.
- Can I mount this camera on the same backplate as a previous Axis onboard camera?
Yes. The P3947-R M12 is designed to share the same form factor, backplate, and accessories as other Axis onboard cameras. This means fleet upgrade projects can replace existing Axis onboard cameras without cutting new holes or running new cable pathways, which significantly reduces installation time and cost on large fleets.
- What is the confirmed operating temperature range for this camera?
The confirmed operating temperature is -30 to 55 degrees Celsius. This range is suitable for rail deployments in climates with significant seasonal variation and accommodates the temperature differentials that occur as vehicles move between outdoor and indoor environments such as tunnels and station platforms.
- Does this camera support local storage, and how does that work in a vehicle environment?
The P3947-R M12 is compatible with microSDXC cards for local edge storage. In a vehicle environment where network connectivity may be intermittent during transit, edge storage allows footage to be recorded locally on the camera and synchronised to a central system when connectivity is restored or the vehicle returns to a depot.
- What cybersecurity measures are built into this model?
The camera includes Axis Edge Vault, which is a hardware-based security module protecting device credentials and cryptographic material. It also features HTTPS encryption, IEEE 802.1X network access control, and a signed operating system that verifies software integrity at boot. These features are relevant for public transport networks that are increasingly targeted in infrastructure cybersecurity frameworks. The P3947-R M12 is part of the Security Wholesalers range for transport and infrastructure projects.
- Does the M12 lens mount make a practical difference in a vehicle installation?
Yes. The M12 lens mount is more compact and inherently more resistant to vibration than standard CS or C mounts used on most commercial cameras. In a rail or tram environment where constant vibration is present, the M12 mount reduces the risk of lens loosening or focal drift over the service life of the camera. The 3.6mm lens on this model is fixed and not interchangeable without selecting a different lens variant.
Additional Information
AXIS 03381-001 Datasheet
