Product Overview
Built for onboard rail and tram surveillance, the Axis P3947-R is a 5 MP dome camera engineered to meet the demanding compliance requirements of the transportation industry. It carries both EN 50155 and EN 45545 certification, making it a verified choice for train carriage, tram cabin, and onboard passenger monitoring applications where off-the-shelf cameras simply do not qualify. Featuring Lightfinder 2.0 with a minimum illumination of 0.16 lux, the P3947-R captures usable colour footage under the low-light conditions typical inside transit vehicles without relying on infrared. The 2.8 mm M12 lens delivers a wide 98.8-degree horizontal field of view, covering carriage interiors efficiently from a single ceiling-mount position. The M12 connector adds vibration and shock resistance suited to rail environments, and the IK10, IP66, and IP67 ratings ensure the housing withstands both impact and ingress. Powered via PoE Class 2, the camera is backed by the AXIS Camera Application Platform for onboard analytics deployment.
Key Capabilities
EN 50155 and EN 45545 Certified
The P3947-R complies with EN 50155 for railway electronic equipment and EN 45545 for fire protection, meeting the mandatory certification requirements for onboard installation in trains and trams across regulated transit networks.
Lightfinder 2.0 Low-Light Performance
With a minimum illumination of 0.16 lux and f/2.0 aperture, Lightfinder 2.0 produces detailed colour imagery inside dimly lit carriages during evening and overnight services, without the visual signature of infrared illumination.
Wide 98.8-Degree Field of View
The 2.8 mm lens covers approximately 98.8 degrees horizontally, allowing a single ceiling-mounted unit to monitor the full width of a standard rail carriage or tram saloon, reducing the number of camera positions required per vehicle.
CV75 Deep Learning Chipset with ACAP
The CV75 deep learning processor supports the AXIS Camera Application Platform, enabling third-party and Axis analytics applications to run directly on the camera for onboard intelligence without additional server hardware.
M12 Connector and Rugged Build
The M12 connector is designed to hold under vibration and mechanical shock encountered in rail environments, complemented by IK10 vandal resistance and IP66/IP67 ingress protection for carriage interiors subject to cleaning, spills, and passenger impact.
Best For
- Rail Carriage Interior Monitoring: EN 50155 and EN 45545 compliance makes the P3947-R a qualified onboard camera for passenger train carriages across regulated transit networks.
- Tram and Light Rail Cabins: The wide 98.8-degree horizontal FOV from a single 2.8 mm ceiling-mount position covers compact tram saloons without the need for multiple camera positions.
- Low-Light Overnight Services: Lightfinder 2.0 at 0.16 lux delivers usable colour footage during low-illumination evening and overnight carriage environments where IR illumination is impractical.
- Fleet Operators Requiring Onboard Analytics: ACAP support and the CV75 chipset allow transit operators to deploy video analytics applications directly on the camera across a managed fleet of vehicles.
Why Choose the Axis P3947-R
The Axis P3947-R occupies a narrow but essential category: a certified onboard dome camera built to rail industry standards that most general-purpose surveillance cameras cannot legally or practically meet. The combination of EN 50155 electronic equipment compliance and EN 45545 fire protection certification is a hard requirement for many transit authorities and rolling stock integrators, and the P3947-R arrives with both. Beyond compliance, the CV75 deep learning chipset with ACAP support means fleet operators are not locked into passive recording. Analytics applications can be deployed directly on the camera, reducing infrastructure dependency across a vehicle fleet. The 5 MP sensor at up to 60 fps, Forensic WDR, and Lightfinder 2.0 at 0.16 lux deliver strong low-light carriage imagery even without IR illumination. The replaceable M12 lens and shared backplate with other Axis onboard cameras also simplify fleet-wide maintenance. Available through Security Wholesalers, the P3947-R is a purpose-built transportation camera where general-purpose alternatives fall short.
Buyer Decision Tips
Buyer Tip: The P3947-R does not include IR illumination, so it relies entirely on existing carriage lighting and its Lightfinder 2.0 sensor to produce footage in low-light conditions. For most rail and tram interiors with overhead lighting active during service, 0.16 lux minimum illumination will be sufficient. However, if the installation involves unlit equipment bays, driver cab areas with no ambient light, or outdoor-mounted positions on the vehicle exterior without supplemental lighting, a camera with active IR or white light illumination would be more appropriate. Confirm the ambient light level at each mounting position before specifying this model across a fleet.
Key Features & Technical Specifications
| Model |
Axis P3947-R (Part No. 03380-001) |
| Resolution |
5 MP (2592 x 1944) |
| Lens |
2.8 mm, f/2.0, M12 mount (replaceable) |
| Horizontal Field of View |
Approximately 98.8 degrees |
| Minimum Illumination |
0.16 lux (colour) |
| IR Illumination |
None |
| Frame Rate |
Up to 60 fps |
| Chipset |
CV75 Deep Learning Chipset |
| Smart Features |
Forensic WDR, Lightfinder 2.0, scene profiles, ACAP support |
| Cybersecurity |
Axis Edge Vault built-in |
| Audio |
Built-in microphone; audio-in support |
| Ingress Protection |
IP66, IP67 |
| Impact Rating |
IK10 |
| Power |
PoE Class 2 |
| Connector |
M12 (also available with RJ45) |
| Operating Temperature |
-30 to 55 degrees C |
| Transportation Standards |
EN 50155, EN 45545 |
Ideal Use Cases
Passenger Train Carriages
EN 50155 and EN 45545 certifications qualify the P3947-R for direct onboard installation in intercity and commuter rail carriages where regulatory compliance is a procurement requirement.
Tram and Light Rail Saloons
The 98.8-degree wide FOV allows a single ceiling-mounted P3947-R to cover the full saloon width of a tram, while the IK10 rating handles the high-contact environment typical of urban light rail vehicles.
Fleet-Wide Analytics Deployment
The CV75 chipset and ACAP support allow transit operators to run onboard analytics applications directly on each P3947-R unit across an entire fleet without deploying additional edge servers.
Evening and Night Service Monitoring
Lightfinder 2.0 at 0.16 lux minimum illumination maintains colour image quality during low-light evening and overnight carriage conditions without requiring supplemental IR lighting inside the passenger area.
Choosing the Right Model
- Choose this model if: Your project requires EN 50155 and EN 45545 compliant onboard surveillance for trains, trams, or light rail vehicles, particularly where the camera will be ceiling-mounted in a passenger saloon and carriage lighting provides at least low-level ambient illumination during service hours.
- Choose a different model if: Your installation is in a completely unlit environment such as an external vehicle mount, undercarriage bay, or any position with zero ambient light, as the P3947-R has no IR illumination and relies entirely on available light. A camera with active IR or supplemental white light would be needed in those positions.
- Choose a different model if: Your project is a standard indoor building surveillance installation, such as an office, retail space, or corridor, where transportation certifications are unnecessary. A general-purpose IP dome camera will offer a significantly better cost-to-specification ratio for those environments.
FAQs
- What does EN 50155 compliance mean for the Axis P3947-R?
EN 50155 is the European standard for electronic equipment used on railway rolling stock. It covers requirements including power supply variation, temperature range, vibration and shock resistance, and electromagnetic compatibility. The P3947-R is certified to this standard, meaning it has been tested and confirmed suitable for installation inside operational train and tram vehicles, not simply rated as being ruggedised in general terms.
- What is EN 45545 and why does it matter for onboard camera selection?
EN 45545 sets fire protection requirements for railway vehicles, covering flame spread, smoke toxicity, and heat release from materials used inside rolling stock. Cameras installed inside passenger carriages must comply with EN 45545 in many transit authority specifications. The P3947-R carries this certification, which eliminates a common procurement obstacle for rail projects in Australia and internationally.
- Does the P3947-R work in low-light carriage environments without IR?
Yes, within the limits of available ambient light. Lightfinder 2.0 combined with the f/2.0 aperture achieves a minimum illumination of 0.16 lux in colour mode. Most passenger carriages have overhead lighting active during service hours, which is sufficient for the sensor to produce detailed footage. In a fully unlit environment with zero ambient light, the camera will not produce usable imagery, as it has no IR illumination.
- Why does the P3947-R use an M12 connector rather than a standard RJ45?
M12 connectors are a transportation and industrial standard designed to maintain a secure connection under vibration, mechanical shock, and temperature cycling conditions that would cause conventional RJ45 plugs to loosen or fail. For rail environments where the camera is subject to constant motion and vibration during operation, M12 is the appropriate connector type. An RJ45 version is also available if the installation environment is more controlled.
- Can analytics applications run directly on the P3947-R?
Yes. The CV75 deep learning chipset supports the AXIS Camera Application Platform, which allows compatible third-party and Axis-developed analytics applications to run directly on the camera. This means passenger counting, occupancy detection, or other onboard analytics can be processed at the edge without requiring a separate server or processing unit on each vehicle.
- How is the P3947-R supplied through Security Wholesalers, and what should I confirm before ordering?
The Axis P3947-R is part of the Security Wholesalers range as part number 03380-001, which is the M12 connector variant. Before ordering, confirm whether your onboard network infrastructure uses M12 or RJ45 terminations, verify the ambient light levels at each proposed mounting position inside the vehicle, and check whether your transit authority specification requires a specific EN 45545 hazard level category, as the certification level should match the rolling stock classification.
Additional Information
AXIS 03380-001 Datasheet
