Axis 02639-001 F2115-R 2MP Varifocal Indoor Modular Sensor
The Axis F2115-R (model 02639-001) is a compact modular sensor unit designed for discrete indoor surveillance deployments requiring flexible focal-length coverage and reliable low-light performance. As part of Axis's F Series modular camera architecture, this sensor separates the imaging optics from the main processing unit, letting you position the tiny sensor head in tight spaces while keeping processing logic elsewhere — a genuine advantage in retail, banking, and educational facilities where aesthetic concealment matters.
Key Features
- 2MP 1/2.8" Progressive Scan CMOS Sensor: Captures 1920×1080 resolution at full frame rates. Paired with a compatible F Series main unit (such as the AXIS F9111), this delivers 1080p @ 60 fps or 720p @ 30 fps across four channels — or pushes 720p to 180 fps if you need ultra-smooth video for high-motion scenes.
- Varifocal 3.2–5.7 mm Lens (F2.2–F3.1 Aperture): Adjustable focal length without swapping hardware. Wide aperture (F2.2 start) means better light collection in dim conditions. At 3.2 mm you get 107.4° horizontal FOV (wide hallway/retail floor coverage); at 5.7 mm you narrow to 56.3° (tighter facial/detail capture). No single fixed lens trades off coverage — this one adapts.
- Forensic WDR (Wide Dynamic Range): Handles mixed lighting — bright windows alongside dark corners — without losing detail in either. Reduces the need for manual iris tweaking or multiple overlapping cameras in high-contrast spaces.
- Excellent Low-Light Color Performance: Maintains usable color imagery in dim conditions rather than dropping to grayscale. Matters for retail loss prevention or security where identifying merchandise or clothing color is a clue.
- SMA-FAKRA Connectors, Vibration-Resistant Design: Industrial-grade connectors withstand mechanical shock and repeated mating cycles. Useful if the sensor might experience vibration or frequent reinstallation.
- IP5X Dust Protection: Sealed against dust and light spray — suitable for clean indoor environments. Not waterproof (skip if you need IP67 or higher). Indoor-only rating keeps cost and size down.
- PoE Powered (Typical 1 W, Max 1.7 W): Ultra-low power draw means even passive PoE or budget-conscious 802.3af switches will handle multiple sensors without strain. No separate 12V supply lines needed.
Integration & Compatibility
The F2115-R is a 2nd-generation sensor module and integrates exclusively with compatible Axis F Series main units. The F9111 is the primary reference, supporting simultaneous 1080p/720p multichannel recording and the exceptional 180 fps 720p framerate for critical incident capture. Wired connectivity via SMA-FAKRA ensures a compact, noise-tolerant signal path from sensor head to main unit — no wireless gaps, no air interfaces to degrade image quality.
Power is delivered over standard Ethernet PoE, simplifying site wiring. Verify that your chosen main unit and cabling match 2nd-generation specifications; 1st-gen modules and cables are not backward-compatible.
When to Choose a Different Sensor
If you need higher megapixel density (5MP or greater) for long-range facial recognition, consider a higher-resolution variant within the modular camera family. If your environment is outdoors or requires IP67 (full submersion tolerance), this indoor-only sensor will fail — select an outdoor-rated F Series module instead. If you need 360° panoramic or multi-directional coverage, a single F2115-R won't suffice; you'll want a multi-sensor main unit.
Frequently Asked Questions
Q: Can I use the 02639-001 with 1st-generation F Series main units?
A: No. The F2115-R is a 2nd-generation sensor and requires 2nd-generation main units and cables. Connector and signal formats are not compatible with 1st-gen hardware.
Q: What's the maximum effective recording time at 1080p 60 fps on a single SD card?
A: Storage depends on your main unit (F9111 supports local microSD expansion up to 512GB) and compression codec. H.265 typically offers 40–50% smaller files than H.264 at the same quality, so a 512GB card at H.265 and 1080p 60fps yields roughly 6–8 days of continuous recording. Verify your main unit's spec sheet for exact codec support and bitrate.
Q: Is the F2115-R suitable for outdoor use or high-vibration environments?
A: No to outdoor — IP5X rating is dust-sealed but not water-resistant. The SMA-FAKRA connectors are vibration-resistant for normal mechanical handling, but this is an indoor sensor module. For outdoor or harsh industrial settings, select an outdoor-rated F Series sensor.
Q: Does the varifocal lens require calibration after adjustment?
A: Manual varifocal lenses (like the 3.2–5.7 mm on this module) are adjusted mechanically with no electronic feedback. Once you set the focal length and focus ring, it stays put. No calibration step is required unless you physically bump it.
Q: What compression codecs does the F2115-R support?
A: Compression is handled by the main unit, not the sensor module itself. Consult the datasheet of your specific F Series main unit (e.g., F9111) for supported codecs — typically H.265, H.264, and MJPEG.
Q: Can I mix the F2115-R with other F Series sensor models on the same main unit?
A: Yes, F Series main units support multiple sensor modules simultaneously, so you can deploy different sensor types (e.g., 2MP varifocal + 5MP fixed) on the same main unit for mixed coverage strategies.
Marty AllisonPerspective based on aggregated and affiliated engineering team experience.
The Axis 02639-001 is a purpose-built modular sensor for integrators who need discreet, multi-purpose coverage without the bulk of traditional cameras. The varifocal 3.2–5.7 mm lens and ultra-low 1 W power budget make this particularly useful in retail and financial environments where you're trying to hide the camera but still need focus flexibility. The modular design means you can tuck the sensor head into a fixture or ceiling cavity while the main unit sits in a nearby cabinet — a real deployment advantage over monolithic cameras.
Technical Highlights:
- Varifocal 3.2–5.7 mm with F2.2–F3.1 Aperture: The wider aperture (F2.2 vs typical F2.8 fixed lenses) lets in roughly 50% more light, directly improving low-light color retention without switching to grayscale or boosting gain and noise.
- 180 fps @ 720p on F9111 Main Unit: Overkill for standard surveillance, but invaluable for loss-prevention review of high-speed incidents (retail theft, slip-and-fall, cash-handling errors). Most systems top out at 30 fps; this gives you 6× the temporal resolution.
- Forensic WDR + Low-Light Color: Combined, these eliminate the most common complaint with budget indoor cameras — blown-out windows and dark merchandise racks in the same frame. You won't need reflectors or supplemental lighting to keep detail.
Deployment Considerations:
- The 2nd-generation requirement is non-negotiable. If your site has 1st-gen F Series infrastructure, you'll need to upgrade the main unit and cabling — swapping just the sensor won't work.
- The IP5X rating means no outdoor mounting and no washdown tolerance. A single drop of water into the connector can cause signal loss. Keep this indoors or under cover.
- Power is ultra-efficient (max 1.7 W), which is excellent for dense sensor deployments, but it also means no on-board storage or on-camera analytics. All processing happens at the main unit — ensure your F Series main unit has sufficient CPU headroom if running analytics.
Best suited for retail and banking loss-prevention systems where you need multiple discreet sensors with focal-length flexibility and fast incident review. The low power budget and modular separation make it ideal for deployments with dozens of sensors on a single PoE infrastructure. Avoid if you need outdoor hardening, NDAA compliance, or on-sensor AI analytics.
