Hanwha SLA-T4680D 2MP Door Jamb Lens Module
The SLA-T4680D is a specialized lens module engineered for concealed entryway and threshold monitoring where discrete installation is a requirement rather than a preference. Unlike traditional camera housings, this pinhole lens module mounts directly into a door jamb, recessing into the frame while maintaining full optical performance. It outputs 2MP (1920 × 1080) imagery, delivering adequate facial and object detail for identification without broadcasting its presence.
Key Features
- 2MP Resolution (1920 × 1080): Captures sufficient detail for facial identification and access-point verification without requiring larger, more visible housings that draw attention during security assessments.
- 4.6mm Pinhole Lens: Enables installation directly into a door jamb opening with minimal protrusion. The 4.6mm focal length provides a natural field of view suitable for entryway capture without extreme wide-angle distortion.
- 0.06 Lux @ F2.5 Low-Light Sensitivity: Maintains usable imagery in dimly lit corridors, stairwells, and interior doorways — situations where supplemental lighting isn't feasible or desired. This matters when you're monitoring without alerting occupants.
- 8-Meter Cable Assembly: Allows the lens body to remain flush in the jamb while routing the connection to an NVR or network switch positioned nearby — typical in wall cavities, drop ceilings, or adjacent rooms. This separation prevents cable routing from compromising the concealed aesthetic.
- ±30 Degree Vertical Adjustment: Fine-tunes the viewing angle post-installation without requiring lens rotation or repositioning, critical when the jamb position may not perfectly align with the ideal capture angle. Allows for precise aiming of the doorway threshold or hallway approach.
- Hidden Security Screw: Prevents unauthorized repositioning or tampering once installed — a practical detail for facilities where access to camera equipment must be physically controlled.
- Black Finish: Blends into door frame hardware and wood stain, reducing visual detection during a security walkthrough by an untrained observer or potential threat.
Integration & Compatibility
The SLA-T4680D pairs with the Hanwha XNB-6001 network camera, delivering seamless integration into existing Hanwha deployments. The module connects via standard network cabling and draws power through PoE, eliminating the need for separate power runs to the doorway — a significant installation simplification for retrofit projects in buildings with limited cable infrastructure.
Deployment Scenarios
This lens module is most effective in access control verification, executive office entryways, high-security facility thresholds, and residential security where aesthetics and discretion are priorities. It is equally suited to warehouse access points, server room entries, and evidence storage areas where audit trail documentation is required but camera visibility must be minimized. A common deployment pattern: pair the SLA-T4680D with an NVR or managed switch positioned within a nearby utility room, creating an invisible perimeter monitor.
Recommended Accessories
Wire management during installation — cable conduit or adhesive-backed clips running through wall cavities — will preserve the concealed profile. Ensure PoE power budgeting when deploying multiple lens modules; a managed switch with PoE capacity planning prevents power starvation during peak usage or future expansions.
Frequently Asked Questions
Q: Is the SLA-T4680D waterproof for exterior door jambs?
A: No. This module is designed for interior installation only. Exterior doorways and weather-exposed jambs require weatherproof housings and appropriate IP ratings (typically IP66 or IP67). Consult Hanwha's outdoor lens offerings for those applications.
Q: Does the 8-meter cable come assembled in the box?
A: Yes. The cable is pre-assembled and ready to route during installation. Plan cable runs through wall cavities or conduit to maintain the concealed appearance.
Q: Can I adjust the lens angle after installation without disassembly?
A: Yes. The ±30 degree adjustment range allows vertical aiming without removing the lens module. This is useful for fine-tuning the capture angle once the module is installed and the XNB-6001 is active.
Q: What's the minimum light level required for usable video?
A: The 0.06 Lux @ F2.5 specification means the module performs in very low ambient light (equivalent to an unlit corridor with moonlight through a window). In complete darkness, IR illumination from the paired XNB-6001 or external IR source is required.
Q: Is this module compatible with non-Hanwha NVRs?
A: The module is hardwired to the XNB-6001 camera body. If you're using a third-party NVR, verify that the XNB-6001 is supported by your VMS platform via ONVIF or proprietary integration before purchasing.
Q: How do I prevent the installation from being discovered during a security audit?
A: The black finish and pinhole lens design minimize visual detection. Cable routing through wall cavities and securing the connection away from the doorway complete the concealment. The hidden security screw prevents casual repositioning or discovery during a physical inspection.
Marty AllisonPerspective based on aggregated and affiliated engineering team experience.
The SLA-T4680D is a surgical tool for deployments where the camera itself must disappear into the architecture. I've seen too many security integrators over-specify resolution or attempt wide-angle lenses in tight spaces — this module cuts through that noise. The 4.6mm pinhole focal length is not a compromise; it's a deliberate optical choice that delivers a natural viewing angle for a doorway without requiring a wider lens that would protrude visibly from the jamb. The 0.06 Lux @ F2.5 specification is the real workhorse here: this is genuine low-light performance, not marketing exaggeration. In a dimly lit stairwell or windowless corridor, the SLA-T4680D will capture usable facial detail without flushing the space with IR that telegraphs the camera's presence to anyone walking past.
Technical Highlights:
- 0.06 Lux @ F2.5: This is 16× more sensitive than a typical 1 Lux camera. Real-world translation: you're capturing meaningful detail in spaces lit only by ambient hallway light or distant windows, which eliminates the need for supplemental lighting in most interior access-control scenarios.
- 8-Meter Cable: Allows the lens body to sit flush in the door jamb while the wiring runs through wall cavities to a nearby switch or NVR. This separation is essential for concealment — visible cables running from a camera defeat the whole covert purpose.
- ±30 Degree Vertical Adjustment: Post-installation tuning without lens removal. I've deployed hundreds of fixed-lens cameras in retrofit environments where a 2–3 degree angle error meant losing the target's face; this adjustment range solves that without field service calls.
Deployment Considerations:
- XNB-6001 Dependency: This is a lens module only — it requires pairing with the XNB-6001 camera body. Do not order in isolation. Confirm the XNB-6001 is in stock and compatible with your VMS before committing.
- Interior Only: The absence of an IP rating or weatherproof gasket means this is strictly interior. An exterior door jamb exposed to wind-driven rain or condensation will fail. Use this for secured interior thresholds, server room entries, and climate-controlled access points only.
- Cable Routing is Installation: The 8-meter cable must be planned into the wall cavity or conduit layout during the rough-in phase. Retrofitting this into a finished wall with no cable pathways will require drywall surgery or surface-mounted conduit that breaks concealment.
The SLA-T4680D is purpose-built for executive suites, secure facility entries, and high-security residential deployments where the camera's invisibility is as important as its optical performance. Pair it with an managed PoE switch in a nearby utility closet, plan your cable runs in advance, and you have a monitoring solution that a casual observer won't detect during a security walkthrough. This is not a camera for the general manager's office doorway; it's for the door you don't want seen.
