Product Overview
Built for onboard vehicle surveillance, the Axis M3905-R M12 is a 2 MP fixed dome camera engineered to meet the specific demands of public transport environments such as buses and coaches. Featuring an M12 lens mount that withstands mechanical vibration, an IK10 vandal-resistance rating, and dual IP66/IP67 ingress protection, this camera is designed to endure the physical stresses of in-vehicle installation without compromise. The 2.8 mm F1.2 lens delivers a 107-degree horizontal field of view, capturing wide interior coverage from a single ceiling-mounted position. Without IR illuminators, the M3905-R relies on Axis Lightfinder technology to achieve a minimum illumination of 0.02 lux, working effectively in the ambient lighting conditions typical of passenger compartments. Forensic WDR with up to 120 dB dynamic range manages bright doorway light flooding into darker cabin interiors, while Traffic Light mode preserves accurate colour rendering in low-light scenes. It is well suited to fleet operators, transit authorities, and integrators specifying onboard CCTV solutions that must comply with transportation-industry fire-safety regulations.
Key Capabilities
Axis Lightfinder Technology
Without IR illuminators, the M3905-R achieves a minimum colour illumination of 0.02 lux at 30 IRE. This allows the camera to capture usable colour footage under the ambient interior lighting of buses and coaches, without the infrared glow that can be distracting for passengers.
Forensic WDR up to 120 dB
Onboard cameras frequently face extreme contrast between bright doorway openings and dimly lit cabin interiors. Forensic WDR processes up to 120 dB of dynamic range to retain detail simultaneously in both the bright and dark areas of the same frame, reducing overexposure at entry points.
Traffic Light Mode
Traffic Light mode is designed to distinguish the colour of traffic signals in dark scenes where standard colour reproduction may fail. For forward-facing or driver-area cameras on transit vehicles, this provides accurate colour evidence of traffic signal status at the time of an incident.
IK10, IP66, and IP67 Protection
The aluminium dome housing carries IK10 vandal resistance and dual IP66/IP67 ingress ratings. This combination protects the camera against deliberate impact from passengers and against dust and water ingress during vehicle washing or exposure to condensation inside a cabin.
Axis Zipstream in H.264 and H.265
Zipstream technology dynamically lowers the bitrate during low-activity scenes while preserving full detail during motion events. For onboard recorders with limited storage capacity, this significantly extends recording duration without reducing the resolution or frame rate of captured footage.
Best For
- Bus and Coach Interior Surveillance: The M12 lens mount resists vibration, the IK10 housing handles passenger impact, and Lightfinder manages cabin lighting conditions without IR illuminators that would distract occupants.
- Fleet Operators with Storage Constraints: Axis Zipstream in H.264 and H.265 reduces storage demand on onboard recorders, allowing longer retention periods from a single SD card or mobile NVR.
- High-Contrast Entry Point Monitoring: Forensic WDR up to 120 dB captures clear images at doorways where bright external light floods into a darker interior, maintaining detail on both entering passengers and the surrounding cabin.
- Transportation Projects Requiring Regulatory Compliance: The M3905-R is confirmed to comply with transportation-industry fire-safety regulations for buses, making it appropriate for fleet operators and integrators who must meet specific onboard equipment standards.
Why Choose the Axis M3905-R M12
The Axis M3905-R M12 is not a general-purpose indoor dome camera repurposed for transport use. It is built specifically for onboard deployment, with an M12 lens mount that tolerates continuous mechanical vibration, an aluminium housing rated IK10, IP66, and IP67, and an operating temperature range of -30°C to 55°C that covers the thermal extremes vehicles encounter in Australian conditions. The 1/2.9″ sensor with F1.2 aperture and Lightfinder technology achieves 0.02 lux minimum colour illumination, performing in dim passenger compartments without the passenger-distracting glow of IR illuminators. Traffic Light mode and Forensic WDR at 120 dB add incident-evidence capability that a standard low-cost dome would not provide. The confirmed compliance with transportation-industry fire-safety regulations for buses removes a significant procurement hurdle for fleet operators. Available through Security Wholesalers, the M3905-R carries a 5-year manufacturer warranty and TAA compliance for government procurement projects.
Buyer Decision Tips
Buyer Tip: The M3905-R requires PoE+ (IEEE 802.3at) for power. Standard PoE (IEEE 802.3af) switches and injectors will not deliver sufficient power. Confirm your onboard power supply or PoE switch supports the 802.3at standard before specifying this camera. Additionally, this model has no built-in IR illuminators: it relies entirely on Lightfinder and existing ambient light. If your installation environment includes spaces with no functional lighting, a camera with active IR or white-light illumination will be more appropriate.
Key Features & Technical Specifications
| Resolution |
2 MP (1920×1080 at 25/30 fps; 1280×720 at 45 fps) |
| Sensor |
1/2.9″ Progressive scan RGB CMOS |
| Lens |
2.8 mm, F1.2, M12 mount, fixed iris |
| Horizontal Field of View |
107 degrees |
| Vertical Field of View |
56 degrees |
| Minimum Focus Distance |
0.3 m |
| Minimum Illumination |
Colour: 0.02 lux at 30 IRE / 0.07 lux at 50 IRE (Lightfinder, 2.8 mm F1.2) |
| Wide Dynamic Range |
Forensic WDR, up to 120 dB |
| Video Compression |
H.265, H.264, Motion JPEG |
| Maximum Frame Rate |
45 fps |
| Vandal and Ingress Rating |
IK10, IP66, IP67 |
| Power |
PoE+ (IEEE 802.3at) |
| Operating Temperature |
-30°C to 55°C |
| Dimensions |
50 mm x 110 mm (diameter) |
| Housing |
Aluminium |
| Memory |
1024 MB RAM, 512 MB Flash |
| Local Storage |
SD card supported |
| Smart Features |
Axis Zipstream (H.264/H.265), Traffic Light mode, motion detection, privacy masking (up to 32 areas) |
| ONVIF Compliance |
ONVIF Profile G, Profile M, Profile S |
| Warranty |
5 years (manufacturer) |
Ideal Use Cases
Bus and Coach Passenger Cabins
The M12 vibration-tolerant lens mount and IK10 housing make the M3905-R suited to ceiling installation inside bus cabins. Lightfinder captures colour images under interior cabin lighting without IR illuminators, and Zipstream reduces the storage load on onboard recorders.
Vehicle Entry and Doorway Zones
Forensic WDR at up to 120 dB manages the extreme contrast between bright outdoor light at a bus door and the darker interior, maintaining detail on faces and clothing of passengers boarding and alighting.
Driver Area and Forward Cabin Monitoring
Traffic Light mode distinguishes traffic signal colours in low-light conditions, providing useful incident evidence from driver-area cameras. The 107-degree horizontal field of view covers a wide forward zone from a single dome mounting position.
Fleet Projects Requiring Regulatory Compliance
The M3905-R is confirmed to comply with transportation-industry fire-safety regulations for buses. Transit authorities and fleet operators specifying equipment to meet onboard standards can include this model in compliant system designs without additional fire-rating verification.
Choosing the Right Model
- Choose this model if: You are specifying onboard surveillance for buses or coaches where transportation fire-safety compliance is required, ambient interior lighting is present, vibration resistance from an M12 lens mount is a priority, and IK10 vandal resistance is needed in a passenger-accessible dome profile.
- Choose a different model if: Your installation site has no ambient lighting and requires active IR illumination for usable footage, if your power infrastructure only supports standard PoE (802.3af) rather than PoE+ (802.3at), or if the project calls for rollingstock compliance rather than bus-industry standards.
FAQs
- Why does the M3905-R use an M12 lens mount instead of a standard CS or C mount?
The M12 mount is a compact, threaded lens format that is mechanically more resistant to vibration than larger bayonet-style mounts. In vehicle installations, engine vibration and road movement can cause standard lens mounts to shift over time, potentially affecting focus or alignment. The M12 format is a common choice in transportation-grade cameras for this reason.
- Does the M3905-R have IR illuminators for use in complete darkness?
No. The M3905-R has no built-in IR illuminators. It uses Axis Lightfinder technology to achieve a minimum colour illumination of 0.02 lux, which is effective under the ambient interior lighting of a passenger vehicle. In environments with no functional lighting at all, a camera with active IR or white-light illumination would be required instead.
- What does Forensic WDR do at 120 dB and why does it matter on a bus?
Forensic WDR captures multiple exposures simultaneously and combines them to handle scenes with extreme contrast, up to 120 dB in this model. On a bus, the most common challenge is a bright doorway opening against a darker interior. Without WDR, either the doorway bleaches out or the cabin interior becomes too dark to identify passengers. Forensic WDR retains usable detail in both areas at once.
- What power supply does the Axis M3905-R require, and can I use a standard PoE switch?
The M3905-R requires PoE+ (IEEE 802.3at), which delivers up to 30 W per port. Standard PoE (IEEE 802.3af) switches supply a maximum of 15.4 W and will not power this camera reliably. Verify that your switch, injector, or onboard power supply is 802.3at compliant before installation.
- Is the M3905-R compliant with transportation regulations for buses?
Yes. Axis confirms that the M3905-R complies with transportation-industry regulations for buses, including fire-safety requirements. It is not, however, confirmed as rollingstock compliant. If your project involves trains or trams rather than road-going buses, verify the applicable compliance requirements before specifying this model. The M3905-R is available through Security Wholesalers for Australian fleet and transit projects.
- How does Axis Zipstream help with onboard recording storage?
Zipstream reduces the bitrate during static or low-movement scenes, such as an empty passenger compartment, while preserving full bitrate when motion is detected. For onboard recorders with fixed SD card or mobile NVR storage, this extends the usable recording window significantly without reducing the resolution or frame rate of event footage captured during active periods.
Additional Information
AXIS 03119-001 Datasheet
