CCTVPLANNER.IO · CAMERA · REOLINK
Reolink Reolink DUO-4G
Panoramic Camera with 3.7MP (2560×1440) resolution, 150° field of view, and 0m IR night vision range. Features Super Low Light technology for superior night performance.
SPECIFICATIONS · REOLINK DUO-4G
Specifications
About the Reolink Reolink DUO-4G
The Reolink Reolink DUO-4G is a multi-sensor panoramic body that replaces several traditional cameras with one seamless image. 4MP resolution delivers a noticeable detail upgrade over 1080p — facial identification extends to roughly 18 meters, and digital zoom on recorded footage stays usable. There is no built-in IR illuminator on this model, so it depends entirely on ambient light. In dark environments, pair it with external IR floods or white-light illuminators. An ultra-wide angle (>120°) captures nearly an entire scene from one position, but pixels per meter drops sharply at the edges, so identification at the periphery is limited. Super Low Light technology pulls usable color out of scenes lit by little more than a streetlight or moonlight, eliminating the need to drop into B/W mode in most night conditions.
Best use cases for this camera
Entrance, lobby & vestibule
The 150° field of view captures the entire entrance and surrounding waiting area from a single ceiling mount. Useful for capturing visitors as they enter and leave.
Single-camera room coverage
A single panoramic camera replaces 3–4 conventional cameras when ceiling-mounted in the center of an open space. Ideal for retail floors, classrooms, and small warehouses where simplification of cabling and licensing matters.
Strengths
- •Super Low Light sensor maintains color detail in near-darkness
- •150° wide field of view reduces the number of cameras needed per area
- •Single-camera coverage of full rooms reduces cabling and licensing cost
Considerations
- •No built-in IR — requires external illumination for night use
- •Edge distortion and reduced peripheral pixel density limit identification at the corners of the frame
- •Fisheye distortion requires dewarping in software for natural viewing angles
Coverage at Different Distances
| Distance | Coverage Width | Coverage Area | Use Case |
|---|---|---|---|
| 5m | 37.3m | 187 m² | Entrance, corridor |
| 10m | 74.6m | 746 m² | Room, retail aisle |
| 15m | 112.0m | 1679 m² | Warehouse, parking row |
| 20m | 149.3m | 2986 m² | Parking row, courtyard |
| 30m | 223.9m | 6718 m² | Parking lot, yard |
| 50m | 373.2m | 18660 m² | Perimeter, large area |
Field of View Visualization
Night Vision Performance
Daytime
Full 3.7MP (2560×1440) resolution at 150° field of view. Effective identification range up to 15m in good lighting conditions.
Nighttime (IR)
Built-in IR LEDs illuminate up to 0m in complete darkness. Super Low Light sensor captures colour images in near-darkness.
Installation tips for the Reolink DUO-4G
Center-ceiling mount at 2.7–3.5 m gives the most uniform coverage; corner mounts work but waste roughly 25% of the field of view on the wall.
Position so the most important subject (entrance, cash register, gate) is in the center third of the frame — peripheral pixel density drops with wide angles.
Coverage geometry & DORI distances
At a 5-metre standoff the Reolink Reolink DUO-4G covers about 37.3 m of scene width; at 10 m that grows to 74.6 m, and at 20 m to 149.3 m. Translating those numbers through EN 62676-4 pixel-density thresholds, the camera can detect a person up to 14 m, observe up to 5 m, recognise up to 3 m, and produce identification-grade detail (the ≥250 px/m bar used by Polish and EU courts as evidentiary) up to 1 m. Effective range above the identify threshold relies on supplementary lighting or a longer-focal-length optic — the geometry above assumes the fixed lens declared by the manufacturer.
Power & cabling
The Reolink Reolink DUO-4G draws an estimated 12.0 W under typical load (with the IR illuminator engaged where applicable), placing it in the 802.3af (Class 3, ≤15.4 W) budget. A single switch port supplies enough power without an injector. Cabling: stick to Cat6 STP for runs up to 100 m end-to-end — beyond that, add an inline PoE extender or move to fibre with a media converter at the camera end. On outdoor runs, route through ø25 PVC or PE conduit to keep the cable shielded from UV and rodents.
Privacy & legal (GDPR / RODO)
Any camera operating in a publicly accessible area falls under GDPR (RODO in Poland) — Art. 13 obliges the data controller to post an information sign at every entry point with controller name, DPO contact, lawful basis (typically Art. 6(1)(f) legitimate interest for property protection), purpose, and retention period. Panoramic / fisheye coverage almost always captures more than the controller intended — schedule a privacy mask review after install to blur out staff-only areas, neighbouring premises and any glass that admits a view of third parties.
Installer time & cost (rough estimate)
A typical EU installer quotes 4–5 h of labour per panoramic camera of this class (approximately €180–€230 excluding hardware), broken down as bracket mounting, cable termination at both ends, on-site commissioning, and a brief operator handover. Allow extra time for high mounts (>4 m), exterior installations requiring scaffolding, or sites where cable routing demands wall penetrations or conduit work.
Indicative EU 2024-2025 pricing — actual quotes vary by region, mounting height, and site conditions. Excludes hardware, transport, permits, and VAT.
Frequently asked questions
Is the Reolink Reolink DUO-4G suitable for outdoor installation?
Most panoramic units in the Reolink catalogue are IP66/IK10 rated for outdoor use — verify the exact suffix in the model code (e.g. "-W" for weather-rated). Mount under an eave or recessed canopy where possible: direct rainfall on the dome causes droplets that distort the wide-angle image.
What PoE class powers the Reolink Reolink DUO-4G?
The camera draws roughly 12.0 W in steady-state operation, requiring a 802.3af (Class 3, ≤15.4 W) switch port. A single Cat6 STP cable carries both data and power up to 100 m — beyond that, add an inline extender or convert to fibre near the camera.
How much storage does the Reolink Reolink DUO-4G consume per day?
At 3.7MP (2560×1440) resolution, 15 fps H.265 continuous recording, the Reolink DUO-4G produces approximately 15 GB per day — about 450 GB per month. Motion-only or event-triggered recording typically cuts that by 40–70 % depending on scene activity. Plan NVR HDD capacity for the longest retention period required by your privacy policy or insurance contract.
Up to what distance can the Reolink Reolink DUO-4G identify a person?
Per EN 62676-4:2025 pixel-density thresholds, this camera identifies (≥ 250 px/m on the target) up to about 1 m, recognises a person up to 3 m, observes general activity up to 5 m, and detects motion up to 14 m. Identification distance assumes daylight or full IR illumination on the target — at the limits of the IR cone the effective identify distance shrinks roughly 30 %.
What network bandwidth does Reolink Reolink DUO-4G use?
Typical ingest is 6 Mbps for the main stream (H.265, medium scene complexity, 15 fps) plus ~0.5 Mbps for a low-resolution sub-stream used by mobile clients. For a 16-camera installation of this class, plan a 50–100 Mbps NVR uplink and a dedicated VLAN for camera traffic.
Related Reolink Panoramic Cameras
Other Reolink cameras
Helpful Tools & Resources
Free CCTV Design Tool
Plan a full camera layout online — no download, free to start
Camera Placement Tool
Position cameras on a real floor plan and see live DORI coverage
FOV Calculator
Calculate field of view for any focal length
Storage Calculator
Estimate HDD requirements for your setup
Camera Quantity Calculator
Find out how many cameras you need
Field of View Explained
Understand HFOV, VFOV, and lens selection
Camera Placement Guide
Best practices for positioning cameras
All Features
See everything CCTVplanner can do
Plan your layout with Reolink Reolink DUO-4G
Use our free CCTV planner to place this camera on your floor plan, see real-time field of view coverage, and generate a professional PDF report.
Free until you outgrow it · No card · No install