Hanwha SLA-T4680A 4.6mm Pinhole Lens Module 2MP
The Hanwha SLA-T4680A is a compact 2MP pinhole lens module engineered for discreet surveillance where covert observation is essential—retail fitting rooms, corporate offices, educational institutions, and healthcare facilities. This module pairs a 1/2.8" CMOS sensor with a fixed 4.6mm lens, delivering high-resolution imaging in a minimal footprint (Ø24 × L49.8mm, 310g) that installs invisibly in standard ceiling or wall cavities. Integration is straightforward via RJ12 connector compatibility with Hanwha's PNM-9000QB and XNB-6001 camera systems.
Key Features
- 2MP CMOS Sensor: Captures detailed 1920 × 1440 video without the bulk of traditional housings—critical when installation discretion matters more than ultra-high resolution. Sufficient clarity for facial recognition and object identification in close-range applications.
- 4.6mm Fixed Focal Length: Delivers a 73° horizontal field of view optimized for pinhole surveillance. Fixed focus eliminates adjustment complexity and focus drift in stationary deployments—you install it once and don't touch it again.
- 0.06 Lux Minimum Illumination: Operates in near-darkness without supplemental IR lighting. Compare this to typical 0.3–0.5 Lux modules—this sensitivity means fewer complaints about installation visibility and lower risk of IR reflection compromising covertness.
- F2.5 Maximum Aperture: Gathers light efficiently in dim environments, reinforcing low-light performance without forcing you to add lighting infrastructure to the space.
- Fixed Focus Design: No focus motor means no moving parts to fail, no maintenance schedule, and no risk of focus shifting due to vibration or temperature swings in HVAC-heavy spaces.
- RJ12 Connector: Integrates directly into Hanwha's modular IP camera systems, simplifying wiring and reducing connector count on your installation harness.
- Compact Black Plastic Housing: Minimal visual footprint blends into dropped ceilings and wall cavities. The neutral finish avoids glint and reflections that might betray a hidden lens.
Coverage and Field of View
The 73° horizontal, 39° vertical, and 85° diagonal FOV is deliberately narrow—ideal for focused zone monitoring rather than wide-angle sweeps. In a fitting room or small office, this angular coverage prevents dead zones while keeping the installation point-blank with the target area. At typical pinhole mounting distances (6–15 feet), you'll resolve facial features and merchandise detail clearly.
Integration and Compatibility
The SLA-T4680A is a lens module, not a standalone camera. It ships as a modular component for Hanwha camera platforms such as the PNM-9000QB and XNB-6001, both of which accept interchangeable lens modules via RJ12 interface. Confirm your camera body supports pinhole lens modules before ordering—this is not a universal accessory. The parent camera handles power delivery (typically PoE or 12VDC, depending on the host camera model), video encoding, and network transmission; the SLA-T4680A contributes only the optical path and sensor interface.
Deployment Scenarios
Loss prevention teams favor this module for retail loss prevention, allowing concealed observation of high-theft areas without the visual deterrent or privacy concerns of visible cameras. Corporate security uses pinhole modules in conference rooms and executive areas where discrete monitoring is contractually or legally mandated. Educational and healthcare institutions deploy these modules in sensitive spaces (nurse stations, medication areas, secure storage) where visible surveillance conflicts with environment aesthetics or regulatory guidance. The 0.06 Lux performance eliminates the need to add lighting to spaces where ambient illumination is already constrained.
What to Verify Before Purchase
Confirm that your intended host camera body (PNM-9000QB, XNB-6001, or equivalent Hanwha module-compatible model) is in stock and compatible with pinhole lens modules—not all Hanwha cameras accept all lens variants. Verify the RJ12 wiring diagram and PoE wattage budget if you're daisy-chaining modules on a single PoE run. Test ambient lighting levels in the target installation space; even at 0.06 Lux, complete darkness (0 Lux) will still yield a black video stream.
Frequently Asked Questions
Q: Can I use the SLA-T4680A as a standalone camera?
A: No. This is a lens module only. It requires a compatible Hanwha camera body (such as the PNM-9000QB or XNB-6001) to capture, encode, and transmit video. The module supplies the optical path and sensor interface; the host camera handles power, processing, and network connectivity.
Q: What camera models accept the SLA-T4680A?
A: The SLA-T4680A is compatible with Hanwha PNM-9000QB and XNB-6001 camera systems via RJ12 connector. Verify your specific camera model supports pinhole lens modules before ordering—not all Hanwha models accept all lens variants.
Q: Does the SLA-T4680A have infrared (IR) lighting?
A: No. The module itself has no IR emitters. Its 0.06 Lux sensitivity allows operation in very dim environments without supplemental lighting, but it cannot see in complete darkness. If your installation requires zero-light operation, confirm the host camera supports IR illumination as a separate feature.
Q: What are the power requirements?
A: The SLA-T4680A is a passive optical module—it draws negligible power. Power delivery comes from the host camera body via the RJ12 interface. Verify the host camera's power budget (typically PoE or 12VDC depending on the model) before deployment.
Q: Is the focus adjustable?
A: No. The SLA-T4680A uses a fixed focus design optimized for close-range pinhole surveillance (typically 6–15 feet). This eliminates focus drift and maintenance, but you cannot refocus after installation. Verify target distance and field of view before commissioning.
Q: What's the minimum illumination required for clear video?
A: The module is rated 0.06 Lux minimum, meaning it can produce video in extremely dim environments. However, below 0.06 Lux (near complete darkness), video quality degrades significantly. For spaces with truly zero ambient light, plan for supplemental IR lighting on the host camera.
Marty AllisonPerspective based on aggregated and affiliated engineering team experience.
The SLA-T4680A represents a mature pinhole lens design for integrators who need discreet surveillance without visible deterrent. The 0.06 Lux sensitivity is exceptional for a passive optical module—most competitors in this form factor operate at 0.3–0.5 Lux or higher, requiring either supplemental lighting or accepting grainy video in dim spaces. That performance difference matters when you're hiding a lens in a ceiling cavity where adding lighting would compromise the covert installation objective.
Technical Highlights:
- 0.06 Lux minimum illumination: Enables operation in near-darkness without IR visible light or supplemental fixtures—a decisive advantage in retail fitting rooms and healthcare spaces where lighting additions would be conspicuous.
- Fixed 4.6mm focal length (73° HFOV): Optimized for close-range observation; no motorized focus mechanism means no moving parts to fail, no maintenance schedule, and guaranteed consistency across dozens of identical deployments in a multi-location retail chain.
- 2MP resolution (1920 × 1440): Sufficient for facial recognition and merchandise detail in typical pinhole mounting distances (6–15 feet); avoids overshooting storage and bandwidth on mega-pixel sensors when the application doesn't demand it.
- F2.5 aperture: Maximizes light transmission in constrained ambient conditions, reducing dependence on the host camera's ISO or noise-reduction algorithms to maintain usable image quality.
Deployment Considerations:
- Modular dependency: This is a lens module, not a camera. Confirm host camera compatibility (PNM-9000QB, XNB-6001) before ordering—installation delay when the host body is unavailable wastes field technician time.
- Fixed focus gotcha: Pinhole modules cannot be refocused post-installation. If you miscalculate mounting distance or target plane depth, you're committed to repositioning the entire host camera body. Measure and simulate coverage before commission.
- Zero-light limitation: At 0.06 Lux, the module is at the threshold of acceptable sensitivity. Spaces with truly zero ambient light (sealed vaults, windowless closets) will still require IR support from the host camera—plan accordingly or consider a different surveillance approach.
For loss prevention integrators deploying retail surveillance across dozens of sites, the SLA-T4680A paired with a standardized Hanwha host body ensures consistent imaging performance and minimal maintenance overhead. The low-light performance eliminates pressure to retrofit lighting into fitting rooms or storage areas, reducing installation complexity and operational friction with retail operations. This is purpose-built for discreet, fixed-point observation where image quality doesn't need to exceed close-range detail, durability trumps adjustability, and covertness is non-negotiable.
