Product Overview
For transit operators and system integrators working in rail, tram, and onboard vehicle environments, the AXIS P3947-R delivers 5 MP indoor dome surveillance built to meet the demands of EN 50155 and EN 45545 transportation standards. Featuring a fixed 3.6 mm lens with an 82.8-degree horizontal field of view, this camera is designed to cover the width of a passenger carriage or cabin interior without requiring lens adjustments. Equipped with Lightfinder 2.0 and Forensic WDR, it handles the shifting contrast and low ambient light conditions common in transit vehicles without relying on a built-in IR illuminator. Built with an IK10 vandal-resistant housing and rated to IP66 and IP67, it withstands the mechanical stress and moisture exposure of onboard installations across an operating temperature range of -30 to 55°C. It also integrates Axis Edge Vault cybersecurity and supports the AXIS Camera Application Platform for scalable on-camera analytics.
Key Capabilities
EN 50155 and EN 45545 Compliance
Designed specifically for rail and tram installations, the P3947-R meets EN 50155 (electronic equipment for railway applications) and EN 45545 (fire protection), making it a qualified choice for onboard vehicle deployments where certification is a procurement requirement.
Lightfinder 2.0 with Forensic WDR
The combination of Lightfinder 2.0 (minimum illumination of 0.16 lux in colour) and Forensic WDR allows the camera to capture usable detail in carriage interiors with mixed artificial lighting, doorway transitions, and tunnel-to-platform contrast shifts.
5 MP at Up to 60 fps
Capturing at up to 2592×1944 resolution and 60 frames per second, the P3947-R records smooth, high-resolution footage of passenger activity, allowing reliable post-incident review even during rapid movement through busy carriages or platforms.
Axis Edge Vault Cybersecurity
Built-in Axis Edge Vault provides hardware-based cryptographic security including a signed OS, IEEE 802.1X authentication, and HTTPS encryption. This matters in networked transit fleets where video data integrity and access control are operational priorities.
Zipstream with H.265 Compression
Axis Zipstream combined with H.265 compression reduces storage and bandwidth requirements without sacrificing forensic image detail. For onboard recording systems with limited storage capacity, this helps extend retention periods across the full camera fleet.
Best For
- Rail and Tram Carriage Interiors: EN 50155 and EN 45545 compliance makes this camera a certified-ready option for passenger surveillance inside trains, trams, and metro carriages where transportation standards are contractually required.
- Transit Hubs and Onboard Vehicles with Extreme Temperature Ranges: The -30 to 55°C operating range suits vehicles that sit idle in cold depots overnight and reach elevated interior temperatures during summer service.
- Upgrade of Existing Axis Onboard Installations: The P3947-R shares the same form-factor, backplate, and accessories as other Axis onboard cameras, allowing fleet operators to swap in this model without replacing mounting hardware.
- Deployments Requiring On-Camera Storage: The built-in memory card slot supports local recording, useful for onboard systems where continuous recording to a vehicle NVR must continue during intermittent network connectivity.
Why Choose the AXIS P3947-R
The AXIS P3947-R occupies a narrow category: a certified 5 MP dome camera built from the ground up for transportation environments rather than adapted from a commercial indoor range. The EN 50155 and EN 45545 certifications, the extended -30 to 55°C operating range, and the IK10 housing are not add-ons but core design decisions that reflect the mechanical shock, vibration, temperature cycling, and fire-resistance demands of rail vehicle installations. The CV75 deep learning chipset enables on-camera intelligence through ACAP applications, allowing operators to run occupancy analytics or audio detection without sending all footage offboard. The shared Axis onboard mounting system means fleet managers already running Axis cameras can upgrade to this model without procurement of new brackets or accessories, reducing installation cost and downtime. The AXIS P3947-R is available at Security Wholesalers for transit integrators and operators working to these standards.
Buyer Decision Tips
No Built-In IR: The P3947-R does not include an IR illuminator. It relies entirely on ambient or artificial light inside the vehicle. In well-lit carriage interiors this is not an issue, but if you are deploying in spaces with no guaranteed lighting (such as storage areas, loading bays, or unlit vestibules), confirm that adequate illumination will always be present before specifying this model. For external vehicle cameras or areas without controlled lighting, a different model with IR or white light illumination would be more appropriate.
Fixed 3.6 mm Lens for Carriage-Width Coverage: The 82.8-degree horizontal field of view is well suited to covering the full width of a standard passenger carriage from a ceiling-mount position. If your installation requires a narrower field of view to focus on a specific doorway or end section, or a wider view to cover an unusually broad vestibule, consider whether a replaceable M12 lens with a different focal length suits your layout before finalising the order.
Key Features & Technical Specifications
| Model |
AXIS P3947-R RJ45 3.6 mm |
| Part Number |
03379-001 |
| Resolution |
5 MP (2592×1944) |
| Max Frame Rate |
60 fps |
| Focal Length |
3.6 mm |
| Aperture |
F2.0 |
| Horizontal Field of View |
82.8 degrees |
| Vertical Field of View |
60.1 degrees |
| Lens Mount |
M12 (replaceable) |
| Minimum Illumination (Colour) |
0.16 lux |
| IR Illuminator |
None |
| Video Compression |
H.265, H.264 (High, Main), Axis Zipstream |
| Smart Features |
Lightfinder 2.0, Forensic WDR, audio detection, active tampering alarm, digital PTZ, scene profiles, ACAP |
| Chipset |
CV75 Deep Learning |
| Audio |
Built-in microphone |
| Local Storage |
Memory card slot (yes) |
| IP Rating |
IP66, IP67 |
| Vandal Rating |
IK10 |
| Operating Temperature |
-30 to 55°C |
| Power |
PoE IEEE 802.3af (Class 2), 44-57 VDC, max 12.95 W |
| Connector |
RJ45 |
| Cybersecurity |
Axis Edge Vault, signed OS, IEEE 802.1X, HTTPS |
| Transportation Standards |
EN 50155, EN 45545 |
| Use Environment |
Indoor |
Ideal Use Cases
Passenger Train Carriages
The EN 50155 certification and IK10 housing make the P3947-R a compliant fit for ceiling-mounted surveillance inside passenger rail carriages, covering seating bays and aisles with its 82.8-degree horizontal field of view.
Tram and Light Rail Interiors
The -30 to 55°C operating range accommodates the temperature extremes common in tram operations, from cold overnight depot storage to heated summer cabins, while Lightfinder 2.0 handles the variable interior lighting at stops and in tunnels.
Fleet Upgrade Projects
Because the P3947-R shares the same backplate and mounting accessories as other Axis onboard dome cameras, transit operators upgrading ageing Axis installations can replace cameras without modifying vehicle ceiling mounts or cabling infrastructure.
Onboard Systems Requiring Edge Analytics
Support for the AXIS Camera Application Platform on the CV75 deep learning chipset allows operators to deploy ACAP-compatible analytics such as occupancy monitoring or audio detection directly on the camera, reducing dependency on centralised server processing.
Choosing the Right Model
- Choose this model if: Your deployment is inside a certified rail or tram vehicle, requires EN 50155 and EN 45545 compliance, operates across a wide temperature range, and needs 5 MP resolution with Lightfinder 2.0 performance in controlled artificial lighting.
- Choose a different model if: Your installation is in an outdoor, unlit, or IR-dependent environment, as the P3947-R has no built-in IR illuminator and is rated for indoor use only. If your site requires a varifocal lens for adjustable framing at commissioning, a camera with a motorised or manual varifocal lens would give you more installation flexibility.
- Choose a different model if: Transportation certification is not a requirement. If you are deploying in a standard commercial or institutional indoor environment without EN 50155 obligations, a general-purpose indoor dome would deliver similar image quality at a lower cost point.
FAQs
- What does EN 50155 compliance mean for the AXIS P3947-R?
EN 50155 is a European standard specifying requirements for electronic equipment used on railway rolling stock, covering aspects such as vibration resistance, temperature tolerance, and power supply variations. The P3947-R being EN 50155 compliant means it has been designed and tested to operate reliably under the mechanical and electrical conditions found in operating rail vehicles, which is a procurement requirement in many transit authority specifications.
- Does the P3947-R work in cold conditions such as overnight depot storage?
Yes. The confirmed operating temperature range is -30 to 55°C, which covers the low-temperature conditions typical of outdoor depot storage in cool climates as well as the elevated interior temperatures that can occur inside a vehicle cabin during summer service. This range is one of the design decisions specific to the transportation variant of this camera.
- Can the lens be replaced on the AXIS P3947-R?
Yes. The P3947-R uses an M12 lens mount and the lens is confirmed as replaceable. This means that if a different focal length is needed to adjust the field of view for a specific carriage layout or vestibule configuration, an appropriate M12 lens can be substituted without replacing the entire camera body.
- Does this camera record locally without a network connection?
Yes. The P3947-R includes a memory card slot that supports local on-camera storage. This is relevant for onboard vehicle deployments where network connectivity to a central recording server may be intermittent during travel between stations or in areas with no trackside network infrastructure.
- Is the P3947-R suitable for ceiling mounting inside a standard passenger carriage?
The 3.6 mm fixed lens provides an 82.8-degree horizontal field of view, which is designed to cover the width of a passenger carriage interior from a ceiling-mounted position. The dome housing and IK10 vandal rating are well matched to the ceiling-mount environment in public transit vehicles, where the camera is exposed to deliberate impact and cleaning.
- What cybersecurity features are built into the P3947-R?
The camera includes Axis Edge Vault, which provides hardware-based cryptographic protection for the device identity and credentials. Additional confirmed features include a signed operating system, IEEE 802.1X network access authentication, and HTTPS encryption. These are relevant for fleet operators connecting onboard cameras to vehicle network systems or centralised command infrastructure where data integrity and unauthorised access prevention are operational requirements. The AXIS P3947-R is supplied through Security Wholesalers for integrators working to these standards.
Additional Information
AXIS 03379-001 Datasheet
