Product Overview
Rail and transit operators deploying cameras across carriage fleets will find the AXIS P3947-R M12 purpose-built for the demands of onboard environments. This 5 MP indoor dome camera is designed for ceiling or wall mounting inside trains and trams, with a D-coded M12 connector that provides vibration-resistant Power over Ethernet connectivity suited to rolling stock installations. Featuring a fixed 2.8 mm lens with a 99-degree horizontal field of view, it captures wide coverage of passenger seating areas and doorways at resolutions up to 2592×1944 at 60 fps. The CV75 deep learning chipset enables on-camera AI analytics including AXIS Video Motion Detection and AXIS Tampering Detection, while Lightfinder 2.0 and Forensic WDR manage the challenging lighting shifts common in transit carriages. Rated IP67, IK10, and NEMA 4X, the camera handles both vandal exposure and variable temperatures from -30°C to 55°C. This SKU (03380-021) is supplied as a bulk pack of 10 units, with all cameras sharing the same backplate and accessories for consistent fleet-wide deployment.
Key Capabilities
D-Coded M12 PoE Connector
The D-coded M12 connector is built to resist the vibration and shock loads of rail environments where standard RJ45 connections can loosen over time. It carries Power over Ethernet (PoE Class 2), simplifying installation by removing the need for a separate power run to each camera position in the carriage.
5 MP at 60 fps
The 1/2.8″ RGB CMOS sensor delivers 2592×1944 resolution at up to 60 fps, allowing smooth video capture of passenger movement and incident events. Higher frame rates reduce motion blur in busy carriage environments, making footage more useful for incident review and evidence purposes.
CV75 On-Camera AI Analytics
The built-in CV75 deep learning chipset runs AXIS Video Motion Detection and AXIS Tampering Detection directly on the camera, without requiring server-side processing. The AXIS Camera Application Platform also allows installation of third-party analytics applications, enabling future capability expansion within the same hardware.
Lightfinder 2.0 and Forensic WDR
Lightfinder 2.0 maintains usable colour imagery at minimum illumination down to 0.16 lux, managing the low-light conditions found in tunnels and poorly lit station stops. Forensic WDR handles the high-contrast lighting shifts that occur when carriages move between dark tunnels and bright outdoor platforms.
Axis Edge Vault Cybersecurity
Axis Edge Vault includes a CC EAL 6+ rated secure element, Axis device ID, signed video, secure boot, and AES-XTS-Plain64 256-bit encrypted filesystem. For transit operators running networked carriage surveillance, this layer of hardware-rooted cybersecurity helps protect video integrity and device authentication against tampering or spoofing.
IP67, IK10, and NEMA 4X Rated
Triple environmental ratings cover the range of conditions onboard cameras encounter: IP67 for dust ingress and water immersion, IK10 for resistance to deliberate impact from passengers, and NEMA 4X for corrosion resistance. The operating range of -30°C to 55°C accommodates outdoor-mounted configurations monitoring track or road activity.
Best For
- Fleet-Wide Carriage Deployment: Supplied as a 10-unit bulk pack with shared backplates and accessories, the P3947-R M12 simplifies standardised installation across multiple carriages or rolling stock units from a single order.
- Vibration-Prone Rail Installations: The M12 connector format is specifically suited to environments where vehicle motion would stress or loosen conventional RJ45 connections, making it appropriate for trains, trams, and light rail.
- High-Traffic Public Transit Interiors: IK10 vandal resistance and a compact dome profile make this camera practical for passenger areas where cameras may be subject to impact or interference.
- AI-Ready Transit Surveillance Networks: The CV75 chipset and AXIS Camera Application Platform support both current analytics needs and future application deployment without requiring hardware replacement.
Why Choose the AXIS P3947-R M12
The AXIS P3947-R M12 is not a general-purpose dome camera adapted for transit use – it is engineered from the ground up for onboard rolling stock environments. The D-coded M12 connector addresses the specific challenge of maintaining secure network and power connections under continuous vibration, which a standard dome camera with an RJ45 connection cannot reliably deliver in a rail environment. The 5 MP resolution at 60 fps provides the frame rate necessary to capture usable footage of fast-moving passenger interactions, while the CV75 chipset keeps analytics processing onboard rather than relying on a centralised server that may have intermittent connectivity during travel. Axis Edge Vault adds a layer of hardware cybersecurity that lower-cost IP cameras simply do not carry. For operators who need to standardise across a fleet, the shared backplate design with other Axis onboard cameras reduces the complexity of future upgrades. This model is available through Security Wholesalers as a 10-unit pack, making it practical for transit system procurement at scale.
Buyer Decision Tips
M12 Cabling Requirement: The AXIS P3947-R M12 uses a D-coded M12 connector rather than a standard RJ45 port. Your PoE switch or injector will need to support D-coded M12 termination, or you will need appropriate M12-to-RJ45 field-assembly cables designed for rail environments. Confirm your network infrastructure is compatible before ordering, particularly if retrofitting into an existing carriage cabling system.
No Built-In IR Illumination: This camera does not include IR LEDs. It relies on Lightfinder 2.0 and ambient carriage lighting to maintain image quality in low-light conditions. For installations where carriage interior lighting is turned off entirely during certain operating periods, verify that minimum lux levels remain above 0.16 lux, or consider supplementary lighting. This camera is not suited to completely dark, unlit environments.
Key Features & Technical Specifications
| Model | AXIS P3947-R M12 2.8 mm |
| SKU / Part Number | 03380-021 (10-unit pack) |
| Resolution | 2592 x 1944 (5 MP) |
| Maximum Frame Rate | 60 fps |
| Image Sensor | 1/2.8″ RGB CMOS |
| Lens Type | Fixed |
| Focal Length | 2.8 mm |
| Aperture | F2.0 |
| Horizontal Field of View | 99 degrees |
| Minimum Illumination (Colour) | 0.16 lux |
| IR Illumination | None |
| Video Compression | H.264, H.265, MJPEG |
| Network Connector | D-coded M12 (PoE) |
| PoE Class | Class 2 |
| IP Rating | IP66, IP67 |
| Vandal Rating | IK10 |
| NEMA Rating | NEMA 4X |
| Operating Temperature | -30°C to 55°C |
| Edge Storage | microSD / microSDHC / microSDXC |
| Cybersecurity | Axis Edge Vault – CC EAL 6+ secure element, Axis device ID, signed video, secure boot, AES-XTS-Plain64 256-bit encrypted filesystem |
| AI Chipset | CV75 deep learning |
| Analytics | AXIS Tampering Detection, AXIS Video Motion Detection, AXIS Camera Application Platform (third-party app support) |
| Audio | Built-in microphone with mechanical on/off switch; audio-in support |
| Image Technology | Lightfinder 2.0, Forensic WDR, scene profiles |
| Pack Quantity | 10 units per SKU |
Ideal Use Cases
Train and Tram Carriage Interiors
Designed specifically for onboard rolling stock, the P3947-R M12 uses a D-coded M12 connector to maintain stable PoE connectivity under continuous vehicle vibration, making it appropriate for passenger carriage ceiling and wall positions across the full fleet.
Station Platform Entrances and Doorways
The 99-degree horizontal field of view covers wide doorway areas and boarding zones. The 5 MP resolution at 60 fps provides detailed footage of passenger flow, while Forensic WDR handles the contrast between bright platform exteriors and darker carriage interiors.
Outward-Facing Track and Road Monitoring
The confirmed operating temperature range of -30°C to 55°C and IP67 rating support outward-facing installation to monitor track activity or road environments, extending the camera’s application beyond the passenger cabin itself.
High-Vandalism Transit Environments
IK10 impact resistance and NEMA 4X corrosion protection make the camera suitable for public-facing transit spaces where cameras are frequently exposed to deliberate damage, cleaning chemicals, or demanding wash-down procedures.
Networked Fleet Analytics Programs
The AXIS Camera Application Platform allows transit operators to deploy third-party analytics applications on the camera itself, enabling passenger counting, occupancy monitoring, or other fleet intelligence programs without additional hardware investment.
Choosing the Right Model
- Choose this model if: You are deploying cameras inside trains, trams, or light rail carriages and require a vibration-resistant M12 PoE connection, 5 MP resolution at 60 fps, on-camera AI analytics, and hardware-level cybersecurity in a bulk 10-unit procurement format.
- Choose a different model if: Your installation uses standard RJ45 PoE infrastructure with no M12 switching capability – this camera cannot terminate to a conventional RJ45 port without additional M12-to-RJ45 cabling. If you need IR illumination for completely unlit spaces, a dome camera with built-in IR LEDs would be more appropriate, as this model relies solely on ambient light and Lightfinder 2.0.
- Choose a different model if: You only require a single-unit purchase – this SKU is a 10-unit bulk pack. For single-camera installations, check whether a single-unit version of the P3947-R M12 is available separately.
FAQs
- Why does this camera use an M12 connector instead of a standard RJ45?
The D-coded M12 connector is a locking connector format used in rail, automotive, and industrial applications where vibration would otherwise cause RJ45 connections to loosen or fail. In a train or tram carriage, the continuous vibration from track travel makes M12 the appropriate choice for maintaining a reliable PoE network connection. Standard dome cameras with RJ45 ports are not designed for this environment. - Does the AXIS P3947-R M12 have IR night vision?
No. This camera does not include IR illumination. It uses Lightfinder 2.0 technology to maintain colour imagery at minimum illumination levels down to 0.16 lux. It is designed for environments with consistent ambient lighting, such as lit carriage interiors. If a deployment location has periods of complete darkness, supplementary lighting will be required. - What does the 10-unit pack format mean for procurement?
The SKU 03380-021 is supplied as a 10-unit bulk pack. All 10 cameras are the same model – AXIS P3947-R M12 2.8 mm – and share the same backplate design and accessory compatibility as other Axis onboard cameras. This simplifies fleet-wide procurement, installation planning, and future hardware upgrades across a standardised platform. - What analytics can be run on this camera without a separate server?
The CV75 deep learning chipset runs AXIS Video Motion Detection and AXIS Tampering Detection directly on the camera. The AXIS Camera Application Platform also supports installation of third-party analytics applications on the device itself, allowing capabilities such as passenger counting or occupancy detection to be processed at the camera edge rather than requiring a centralised server. - What does Axis Edge Vault provide and why does it matter for transit operators?
Axis Edge Vault is a hardware cybersecurity platform built into the camera. It includes a CC EAL 6+ rated secure element for cryptographic operations, Axis device ID for authenticated device identity, signed video to verify footage has not been altered, secure boot to prevent unauthorised firmware, and an AES-XTS-Plain64 256-bit encrypted filesystem. For transit networks where video evidence may be used in legal proceedings or where network security is a regulatory requirement, this level of hardware-rooted security is a meaningful differentiator from standard IP cameras. - Can this camera be mounted outward-facing to monitor track or road activity?
Yes. Axis confirms the P3947-R M12 can be mounted outward-facing to monitor track or road activity, in addition to its primary use inside carriages. The IP67 and NEMA 4X ratings support exposure to external environmental conditions, and the -30°C to 55°C operating temperature range covers the range of outdoor conditions on rolling stock exteriors. - Does this camera support edge storage?
Yes. The P3947-R M12 supports microSD, microSDHC, and microSDXC cards for onboard edge storage. This is relevant for transit deployments where network connectivity during travel may be intermittent – footage can be stored locally on the camera and retrieved or synced when the vehicle returns to a connected environment. Edge storage is available through Security Wholesalers as a standard capability of this model, with the card itself purchased separately.
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