Hikvision DS-2CD3687G3-LIZSUY/SL-BLK 8MP Darkfighter Motorised Bullet Camera with ColorVu Strobe Light & Audio Alarm, Varifocal 2.7–13.5mm (BLACK)

Model: DS-2CD3687G3-LIZSUY/SL-BLK

Who This Is For

For security integrators and commercial property managers who need a single camera to both capture and confront - this Hikvision DS-2CD3687G3-LIZSUY/SL-BLK delivers 8MP Smart Hybrid Light imaging alongside an onboard strobe and audio alarm that activate the moment AcuSense detects a person or vehicle. The motorised 2.7-13.5mm varifocal lens gives installers a genuine 5x optical zoom range to dial in coverage from a loading dock entry point, a car park approach, or a perimeter fence line without changing lenses or repositioning the mount. The black housing suits sites where a low-profile deterrent fits the aesthetic better than a white camera. DarkFighter and ColorVu work in tandem so the camera produces full-colour footage in near-darkness, then switches to IR when ambient light drops further. Two-way audio via the built-in microphone and speaker rounds out the active deterrence package.

What This Camera Actually Does

Who Buys This Model

• Commercial Security Integrators: Installing perimeter systems on warehouses, factories, and logistics facilities where a camera needs to detect, classify, and respond to intrusions autonomously between guard patrols.
• Construction Site Managers: Protecting plant, equipment, and materials at sites where after-hours access is the primary theft window and a visible strobe response is a cost-effective substitute for a permanent guard presence.
• Retail Centre Operations Teams: Covering car park entries, service lanes, and rear loading docks where a motorised varifocal lens lets one camera handle both wide-area monitoring and zoomed identification without a second unit.
• Industrial Estate Property Managers: Specifying cameras for multi-tenancy industrial properties where the black housing blends with dark cladding and steel structures, and the AcuSense filtering reduces alarm fatigue from forklift and truck movement.
• Monitoring Stations Supporting Remote Sites: Deploying cameras on unmanned rural or remote infrastructure sites where two-way audio and strobe deterrence allow an operator to respond to a verified intrusion without dispatching a physical response immediately.

Honest Assessment

The DS-2CD3687G3-LIZSUY/SL-BLK does several things in one housing that would otherwise require separate devices - varifocal 8MP imaging, Smart Hybrid Light for colour night vision, AcuSense AI filtering, an active strobe and alarm, and two-way audio. For perimeter and approach coverage on commercial or industrial sites, that combination is genuinely useful and reduces the number of camera positions needed to deliver a deterrence-capable system. The motorised lens is a practical advantage on elevated or difficult-to-reach mounts where remote zoom adjustment saves return visit time. Where this camera is not the right fit: if your site requires wide-area coverage from a single mount point, a panoramic or multi-sensor camera covers more angular ground. If your priority is identification at distances beyond 40-50 metres, a long-range IR bullet with a tighter fixed focal length may outperform the zoom end of this lens on pixel density. Available through Security Australia, this model suits active deterrence briefs more than pure passive recording applications.

Before You Buy

Quick Fit Check

• Good match if: You need a perimeter or approach camera that actively deters intrusions with a strobe and audio alarm triggered by AcuSense human or vehicle classification - not just a passive recording device.
• Good match if: The install point is fixed but the coverage distance may change - the motorised 2.7-13.5mm varifocal lets you adjust the field of view remotely after mounting without revisiting the site.
• You may need a different model if: You need 180-degree or 360-degree coverage from a single camera position - a panoramic or multi-sensor camera type will serve that brief better than a single-lens bullet.

Key Features & Technical Specifications

Real-World Scenarios

How It Compares

• Choose this if: You need a single outdoor camera that combines 8MP varifocal imaging, Smart Hybrid Light colour night vision, AcuSense AI filtering, strobe and alarm deterrence, and two-way audio - all in one bullet housing without add-on devices.
• You may need a different model if: Your site requires wide-angle or full 180-degree perimeter coverage from a single mounting point - a panoramic or multi-sensor camera type is more suitable for that coverage brief than a single-lens bullet.
• Pairs well with: An AcuSense-compatible NVR with PoE+ ports, allowing the camera's strobe and alarm triggers to integrate with the NVR's event management and remote monitoring platform.

Common Questions

1. Does this camera work as an active deterrent or does it just record?

   It does both. The DS-2CD3687G3-LIZSUY/SL-BLK records continuously and also triggers an onboard strobe light and audio alarm when AcuSense classifies a detection event as a person or vehicle. The deterrence response is automatic once configured - it does not require a human operator to initiate it, though the two-way audio feature does require operator involvement to deliver a live verbal warning.

2. Will the strobe and alarm trigger on every motion event?

   No. The strobe and alarm are tied to AcuSense AI classification, not standard pixel-change motion detection. The system distinguishes between humans and vehicles versus non-target motion such as foliage, rain, or animals. Only confirmed human or vehicle detections trigger the active deterrence response, which is what reduces false alarm callouts on exposed outdoor sites.

3. What is the difference between DarkFighter and ColorVu in this camera?

   They serve different light conditions. ColorVu uses white-light LEDs to illuminate a scene and produce full-colour images in very low ambient light - it relies on visible light. DarkFighter is a sensor-level low-light technology that works with infrared illumination to produce monochrome images in near-total darkness where even white-light LEDs lose effectiveness. Smart Hybrid Light manages both automatically, prioritising colour output where light levels allow and switching to IR when they do not.

4. Does the motorised zoom require PoE+ or will standard PoE work?

   PoE+ (IEEE 802.3at, up to 30W) is recommended for this model. Standard IEEE 802.3af PoE (15.4W) may not provide sufficient power budget to run the motorised lens, strobe, speaker, and imaging system simultaneously at full load. Using an 802.3af-only switch port risks instability in active deterrence scenarios - check your PoE switch port ratings before committing to a switch for this deployment.

5. Can the lens zoom be adjusted remotely after the camera is mounted?

   Yes. The motorised varifocal lens is adjustable via the camera's web interface, a compatible Hikvision NVR, or through SADP/iVMS software. The 2.7-13.5mm range gives a 5x optical zoom adjustment without physically accessing the camera. This is particularly useful on elevated, rooftop, or bracket-mounted positions where returning to adjust a fixed lens is impractical.

6. Does this camera support two-way audio, and what does it need on the NVR side?

   Yes. Both a built-in microphone and a built-in speaker are confirmed on this model, making two-way audio fully self-contained in the camera housing. On the NVR side, you need a Hikvision NVR that supports audio channels and two-way talk functionality - confirm your NVR model's audio input channel count if you are deploying multiple audio-capable cameras simultaneously. The team at Security Australia can assist with confirming NVR compatibility before purchase.

7. Will this camera work on a third-party NVR using ONVIF?

   Partially. Basic video streaming via ONVIF Profile S will function on most third-party NVRs. However, AcuSense AI event triggers, strobe and alarm activation, two-way audio relay, and Smart Hybrid Light mode management are Hikvision-proprietary features. These functions require a Hikvision-native NVR or VMS to operate correctly. On a third-party ONVIF NVR you will get recording, but you lose the active deterrence integration entirely.

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