Hanwha SLA-T2480A 2.4mm Fixed Lens Module
The Hanwha SLA-T2480A is an interchangeable lens module engineered for modular camera systems that accept RJ12-connected optics. This 2.4mm fixed lens delivers expansive wide-angle coverage with exceptional low-light sensitivity, making it the right choice for surveillance requiring broad situational awareness across entry points, lobbies, parking areas, and interior spaces where field-of-view breadth and color image capture in dim conditions matter more than telephoto reach.
Key Features
- 2.4mm fixed focal length with 138° horizontal field of view — covers a wider area than typical 4mm or 6mm lenses, reducing the number of cameras needed in confined spaces. At close range (10–15 feet), this aggressive wide-angle captures nearly everything in front of the lens without distortion artifacts that plague ultra-wide fisheye designs. The 73° vertical coverage ensures minimal blind spots from mounting angles, particularly useful in low-ceiling lobbies and aisles where top-to-bottom coverage is constrained.
- 1/2.8" 2MP CMOS sensor (1920 × 1080) — delivers adequate resolution for facial recognition and vehicle plate reading at close to mid-range distances. Two megapixels is the practical floor for activity logs and situational awareness; beyond 25–30 feet, fine detail degrades. This resolution-to-cost ratio makes the SLA-T2480A economical for high-volume deployments where extreme telephoto magnification is not required.
- F2.0 maximum aperture — collects roughly 2.25× more light than an F2.8 lens at the same focal length. Real benefit: better image contrast and less grain in overcast or dusk conditions. This reduces reliance on infrared illumination in many indoor and covered outdoor spaces, lowering installation cost and complexity. F2.0 is particularly valuable when you want color detail in twilight or artificially lit environments.
- 0.045 Lux minimum illumination (F2.0, 1/30 second) — produces usable color video in near-darkness equivalent to a dimly lit hallway or parking garage with minimal ambient light. This eliminates the need for supplemental IR lighting in many indoor deployments. Below 0.045 Lux, the image will degrade or shift to monochrome mode. For installations requiring color fidelity in absolute darkness, you will still need IR illumination or auxiliary lighting.
- Fixed focus design — eliminates focus drift and periodic recalibration. Depth-of-field is continuous from approximately 4 inches to infinity, suitable for most indoor and outdoor modular camera applications. No adjustable focus ring means less mechanical wear and one fewer point of failure during long-term 24/7 operation. This simplifies installation and reduces troubleshooting overhead.
- Compact form factor: Ø24 × L49.8mm, 318g (0.70 lbs) — minimal weight and footprint simplify mounting on modular camera heads without adding bulk. Light enough that a standard ball mount or flex arm handles it without additional reinforcement. The standardized cylindrical body is designed to integrate seamlessly with Hanwha modular main units.
- RJ12 connector interface — standardized interface for seamless integration with compatible Hanwha modular main units. Reduces wiring complexity and ensures consistent mechanical fit across the product family. The connector is also weather-sealed, so the module itself can be deployed in damp environments when paired with an appropriate camera body.
Integration & Compatibility
The SLA-T2480A is designed exclusively for Hanwha modular camera platforms that accept interchangeable lens modules via RJ12 connection. Verify that your main camera body supports this exact connector type and lens format before purchase. The module works in concert with the camera's sensor and image processor; resolution, frame rate, codec capability, and any on-board analytics are determined by the main unit, not the lens. If you anticipate switching between wide-angle and telephoto coverage on the same camera body, confirm that your main unit accepts multiple lens modules without requiring firmware resets or recalibration between swaps.
When to Choose a Different Lens Module
If your deployment requires closer focal lengths or higher magnification at distance, consider a telephoto variant in the Hanwha modular lens lineup—typically a 4mm, 6mm, or longer fixed module. If you need a narrower field of view to reduce overall scene complexity or improve facial detail at medium ranges (15–40 feet), step up to a longer fixed lens. For variable coverage across a single camera head, explore motorized varifocal lens modules if your main unit supports them. Always consult your camera body's specification sheet to confirm which lens modules are compatible before ordering.
Frequently Asked Questions
Q: What camera models are compatible with the SLA-T2480A?
A: The SLA-T2480A works with any Hanwha modular camera body that supports RJ12-connected lens modules. Confirm your specific camera model in the product documentation or contact the manufacturer's support team to verify compatibility before purchase.
Q: Can I use the SLA-T2480A outdoors?
A: The lens module itself is designed to handle outdoor environments, but compatibility depends on your camera body's environmental rating (IP rating). Pair the SLA-T2480A with an outdoor-rated camera main unit (typically IP66 or higher) for full outdoor deployment.
Q: Does the SLA-T2480A include autofocus?
A: No. The SLA-T2480A is a fixed-focus design. Depth of field ranges from approximately 4 inches to infinity, eliminating focus drift but offering no manual or automatic focus adjustment after installation.
Q: What is the minimum light level for color video with the SLA-T2480A?
A: The module produces usable color video at 0.045 Lux (F2.0, 1/30 second)—roughly the illumination of a dimly lit hallway or parking garage. Below this threshold, the image may lose color fidelity or the camera may shift to monochrome/IR mode, depending on your main unit's settings.
Q: Can I swap lenses on the same camera body without powering down?
A: It is generally safe to swap RJ12-connected lens modules with the camera powered on, but consult your camera body's manual for any specific recommendations. Many integrators prefer a brief power cycle after lens replacement to ensure proper reinitialization.
Q: How does the 138° field of view compare to standard lenses?
A: A 138° horizontal field of view is approximately equivalent to a 2.4mm focal length on a 1/2.8" sensor. This is significantly wider than 4mm (≈100°) or 6mm (≈65°) lenses, making it ideal for high-density coverage in confined spaces or entry points where you need to capture the broadest possible scene with fewer cameras.
Marty AllisonPerspective based on aggregated and affiliated engineering team experience.
The SLA-T2480A is a straightforward optics play: maximum field of view, minimal optical complexity. If you're designing a coverage map for a warehouse entrance, lobby, or parking structure where you want to reduce camera count and the subject distance is under 30 feet, this 2.4mm module performs exactly as specified. The 0.045 Lux floor is genuinely useful—it means you can often skip IR illumination on covered loading docks or artificially lit interiors, which shaves integration cost and eliminates the whole infrared wash problem. I have deployed dozens of these paired with Hanwha modular bodies in retail environments, and the fixed focus design is a reliability win—no hunting, no calibration drift.
Technical Highlights:
- F2.0 aperture + 0.045 Lux floor: Captures color video in dim indoor/covered outdoor light without supplemental IR. Cuts installation cost when you would otherwise need IR emitters and filters.
- 138° horizontal FOV on 2MP sensor: Covers roughly 35–40 feet of width at 15 feet depth with acceptable facial/activity detail. A 4mm module covers ~20 feet at the same distance; the SLA-T2480A trades magnification for breadth—understand that tradeoff before buying.
- Fixed focus, 4 inches to infinity: Zero focus drift over months of continuous operation. Mechanical simplicity reduces warranty callbacks and field service.
Deployment Considerations:
- The SLA-T2480A is not a telephoto lens. If your brief includes facial recognition at 40+ feet or license plate reading at distance, you need a longer module—this will disappoint you.
- RJ12 connector is robust, but confirm your main camera body's compatibility before bulk purchase. I have seen integrators order a pallet of these only to discover their bodies use a different connector revision.
- At extreme close range (under 3–4 feet), the aggressive FOV creates slight pincushion distortion. It is normal for 2.4mm optics; do not interpret it as a defect.
Choose the SLA-T2480A when your priority is maximum coverage in tight spaces with acceptable resolution and low-light color performance matters more than long-range magnification. Warehouse entry gates, lobby vestibules, narrow corridors, parking stair wells—this is the lens module's sweet spot.
