The AXIS P3935-LR is designed specifically for onboard surveillance inside vehicles (rolling stock, public transit, emergency vehicles etc.). It features a durable, vandal-resistant dome housing, enhanced low-light performance, invisible IR for non-disruption, and features to deal with vibration, dust, moisture, and variable lighting environments.
Key Features & Capabilities
Feature | Details |
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Resolution & Imaging | Full HD (1920 × 1080) video at up to 25/30 fps. Includes Forensic WDR so scenes with very bright and very dark areas still produce usable detail. |
Low Light & Night Vision | Lightfinder technology for sharp colour images in poor lighting. When lighting drops, invisible IR LEDs (940 nm) enable B/W surveillance without visible glow or distraction. |
Optics / Lens Options | Comes standard with a 2.8 mm lens (≈110° horizontal FoV, ≈62° vertical). Lens is replaceable (various M12 lens options: wider or narrower fields). |
Stabilization | Built-in electronic image stabilization (EIS) to counteract vibrations and motion typical in moving vehicles, helping reduce blur. |
Ruggedness & Outdoor-ready Specifications | Housing is metal, rated IK10 (vandal resistance) and IP66/IP67 (dust/water protection). Operating temp from −40 to +55 °C. Designed to comply with transportation standards (EN50155, EN45545, NFPA 130). |
Audio & I/O | Built-in microphone plus external audio input. Also includes I/O for alarms / external triggers. Audio detection features. |
Field Use & Installation | Versions with RJ45 or M12 connectors for secure, vibration-tolerant connections. Local storage (microSD slot) for recording when needed. Optional filtering of view obstruction (block view detection), focus monitoring. |
Security / Cybersecurity | Signed firmware, secure boot; features for preventing tampering or unauthorized firmware changes. Supports network security standards (TLS/HTTPS, IEEE 802.1X). |
Compression / Network Efficiency | Supports H.264, H.265, and Axis Zipstream to reduce bandwidth/storage load while preserving forensic image quality. |
Use Cases
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Transit Vehicles
Buses, subways, trams: monitor passenger cabins, driver area, doors; deal with lighting changes (tunnels, overhead lighting), vibration and potential vandalism. -
Emergency Vehicles and First Responders
Police cars, ambulances, fire trucks: forward-facing or driver cabin view; discrete IR (940nm) helps avoid distracting lights inside cabins. -
Rail / Rolling Stock Interiors
For carriages, corridors, seating areas: durable casing to handle motion, moisture, and harsh environmental conditions; required certifications (EN50155 etc.) matter here. -
Utility / Mining Vehicles
For vehicles operating in dusty, wet or rough terrain: the camera’s ruggedness and IR make it reliable even in adverse conditions. -
School Buses or Shuttle Services
Monitoring student behaviour; night time operation when vehicles pick up or drop off in dark; parent-lighting / cabin lighting variability. -
Surveillance for Private / Commercial Fleets
For example, coach companies, long haul trucks: use the camera to monitor interiors, doors, or external view if mounted properly; help with safety / incident evidence.
Frequently Asked Questions (FAQs)
Question | Answer |
---|---|
What is the minimum light required to get colour images? | Colour images are possible down to about 0.06 lux. When it gets darker, it can switch to B/W using invisible IR. |
How invisible is the IR – will passengers see it? | The IR LEDs are 940 nm, which are very low visibility to the human eye. Minimal to no visible glow, ideal for non-disruption. |
Can the camera handle motion / vibration? | Yes. It has electronic image stabilization (EIS) to reduce motion blur from vehicle vibration, bumps etc. |
What lens options are there and which field of view can I expect? | The standard lens is 2.8 mm giving ~110° horizontal, ~62° vertical. Other M12 lens options (e.g. wider or narrower) are available to adapt to needed view coverage. |
Is it protected from vibration, water, dust etc.? | Yes. Metal robust housing with IP66/IP67 ratings and IK10 for vandal protection. Also suitable for harsh temperature ranges. |
Does it support local storage / recording if network is down? | Yes — it has a memory card (microSD) slot. |
What audio capabilities? | Built-in microphone plus external audio input. Can also detect audio events. |
Will it work in tunnels or underpasses where lighting changes abruptly? | Yes. Thanks to Lightfinder and WDR, it handles scenes with both shadows and strong contrast, and can move between bright/dark zones with better continuity. |
How does it connect / power? | It uses PoE (Power over Ethernet) Class 3. Connectors are robust (RJ45 or M12 depending version) for onboard use. |