Hanwha SLA-T4680VA 4.6mm Pinhole Lens Module
The Hanwha SLA-T4680VA is a compact 2MP pinhole lens module purpose-built for discreet surveillance deployments where minimal visual footprint and precise area monitoring take priority. This is not a panoramic coverage device—it's engineered to watch a specific zone with sharp detail while remaining virtually undetectable. The module integrates with compatible Hanwha IP camera systems via RJ12 connection, making it suitable for covert installations in banks, offices, retail environments, and other sensitive locations where traditional dome or bullet cameras would be inappropriate or visible.
Key Features
- 2MP CMOS Sensor: Delivers 1920×1080-equivalent detail capture in a compact form, sufficient for facial recognition and license plate identification at typical indoor pinhole distances without overshooting resolution requirements.
- 4.6mm Fixed Focal Length: Provides a 73° horizontal field of view—wide enough for a conference room or office entrance, narrow enough to exclude unwanted peripheral areas and reduce false-alarm triggers from adjacent activity.
- 0.06 Lux Minimum Illumination (F2.5, 1/30s): Operates in near-darkness—think dimly lit hallways, stairwells, or entry vestibules with minimal ambient light. This spec means you won't need supplemental IR or auxiliary lighting in many interior covert scenarios, keeping the module truly invisible.
- F2.5 Maximum Aperture: Maximizes light transmission in low-light environments without sacrificing depth of field. Reduces image noise compared to smaller apertures at identical illumination levels.
- Fixed Focus Design: Eliminates mechanical autofocus motors that can fail or introduce maintenance overhead. Once positioned, the module requires no tuning—ideal for installations you won't revisit.
- Compact Pinhole Housing: Measures just 30mm wide × 27.9mm high × 45mm deep and weighs only 321 grams, fitting into standard pinhole penetrations in walls, ceilings, or furniture without visible brackets or housings.
- RJ12 Connectivity: Direct integration with Hanwha surveillance infrastructure; no proprietary adapters or separate signal conditioning required.
- Metal and Plastic Construction: Durable for continuous operation; lightweight enough for mounting in ceiling tiles or hollow-wall applications without structural concerns.
Deployment Considerations
The SLA-T4680VA excels in targeted surveillance where you need sharp imaging of a confined space. A 73° horizontal field of view is deliberate—it rejects excessive peripheral noise and concentrates storage and bandwidth on the zone that matters. This is ideal for monitoring a teller window, an office desk, or a storage shelf entrance, but not suitable for panoramic lobby or parking-lot coverage. If your requirement spans multiple angles or areas, plan to deploy multiple modules or consider a wider-angle network camera lens instead.
The 0.06 Lux rating is genuine but conditional: it assumes F2.5 aperture and 1/30 second shutter speed. In extreme low-light (below 0.06 Lux), image motion blur increases at slower shutter speeds, and you may need supplemental IR or a faster lens. For applications with stable, consistent dim lighting (e.g., offices with night lighting, retail after-hours), this module performs reliably. For variable or highly dark environments, verify the lighting profile during site assessment.
System Compatibility
The RJ12 connection is specific to Hanwha's modular surveillance platform. Verify your recording and management system—NVRs, hybrid recorders, and management software—explicitly support this lens module before purchasing. Incompatible systems will not recognize the module or may require firmware updates. Hanwha network video recorders designed for modular lens systems are the primary integration point; consult compatibility matrices for your specific recorder model.
When to Choose a Different Model
If your requirement includes broader area coverage (120°+ horizontal field of view), select a higher-focal-length variant or a wide-angle pinhole lens in the same family. If you need color night vision or integrated IR illumination, a full camera module may be more appropriate than a lens-only design. If the RJ12 connector isn't supported by your existing infrastructure, confirm integration before committing.
Frequently Asked Questions
Q: Can the SLA-T4680VA be installed outdoors?
A: The module is not rated for outdoor use. No IP rating is specified in the evidence. It is designed for interior installations where temperature and humidity are controlled (typical office/retail environments).
Q: What video codec and frame rate does the SLA-T4680VA support?
A: Codec and frame-rate specifications are not detailed in the available documentation. These are determined by the compatible Hanwha recording platform, not the lens module itself. Consult your recorder's specifications.
Q: Is the SLA-T4680VA NDAA Section 889 compliant?
A: Compliance status is not stated in the evidence. Contact the manufacturer or authorized integrator for certification and supply-chain documentation if federal compliance is a requirement.
Q: Can I adjust focus after installation?
A: No. The SLA-T4680VA has fixed focus, meaning focus adjustment is set at the factory and cannot be changed in the field. Position and mount the module carefully during installation.
Q: What is the warranty period?
A: Warranty terms are not included in the available product documentation. Contact your distributor or manufacturer for coverage details.
Q: Will the SLA-T4680VA work with non-Hanwha recording systems?
A: The RJ12 connection is proprietary to Hanwha's modular platform. Integration with third-party NVRs or VMS systems is not supported. Ensure your recording infrastructure is explicitly designed for this lens module.
Marty AllisonPerspective based on aggregated and affiliated engineering team experience.
The SLA-T4680VA (often searched as SLA T4680VA) is a precision tool, not a universal lens. If your covert surveillance requirement is a single critical zone—a teller station, safe-deposit-box area, or executive office—with stable interior lighting, this module delivers sharp 2MP detail at genuinely low illumination (0.06 Lux) without visible housings or brackets. The fixed 4.6mm focal length eliminates autofocus complexity and is exactly the constraint that makes pinhole deployments practical.
Technical Highlights:
- 0.06 Lux Performance: At F2.5 aperture and 1/30 second shutter, this module operates in near-darkness without auxiliary lighting—a meaningful advantage in covert scenarios where illumination infrastructure would betray the installation.
- 73° Horizontal Field of View: Narrow by surveillance standards, but intentional. You get sharp focused detail on a confined area instead of stretched, noisy panoramic coverage. For a 10-foot-wide office or teller window, this is exactly the right angle.
- 321-gram Compact Form Factor: Fits through a standard 30mm pinhole without visible external brackets or housings. The metal-and-plastic construction is durable for continuous 24/7 operation without mechanical wear concerns (no moving autofocus elements).
Deployment Considerations:
- RJ12 integration is non-negotiable. Verify your Hanwha recording platform explicitly supports this module before purchase. Third-party NVR or VMS integration is not possible.
- Fixed focus means field adjustment ends at installation. Measure and confirm depth-of-field coverage during site assessment; you cannot refocus remotely if mounting depth shifts.
- Interior-only rating. No IP or environmental rating published. This module is not suitable for hallway ceilings exposed to humidity swings or temperature extremes—keep it in climate-controlled office/retail spaces.
Position the SLA-T4680VA where you need precise detail on a single controlled zone: teller stations, executive desks, evidence storage, or retail display perimeters. For wide-area hallway or parking-lot coverage, this is overkill and the wrong choice. For high-security limited-zone monitoring with architectural invisibility, it's the right answer.
