Reolink CX810 vs RLC-843A: Which 4K PoE Camera Delivers Better Night Vision and Coverage?

When choosing a 4K PoE security camera, two models often stand out: the Reolink CX810 and the RLC-843A. Both deliver crisp 4K resolution and reliable Power over Ethernet (PoE) connectivity, but they differ significantly in night vision technology and field of view. This comparison will help you decide which camera better suits your property's needs.

In this guide, we'll break down the key differences in image quality, night vision capabilities, coverage area, and smart features. Whether you're securing a small home or a sprawling business, understanding these distinctions is crucial for making an informed investment.

Night Vision: ColorX vs Infrared

The most significant difference between the CX810 and RLC-843A lies in their night vision approaches. The Reolink CX810 uses ColorX technology, which leverages a large aperture and a sensitive sensor to capture full-color footage even in near-total darkness (down to 0.0001 lux). This means you get vivid, detailed images at night without needing external lighting, making identification of faces and license plates much easier.

In contrast, the RLC-843A relies on traditional infrared (IR) LEDs with a range of up to 30 meters. This produces black-and-white footage at night, which is perfectly adequate for general surveillance but lacks the color detail that can be crucial in forensic scenarios. If color night vision is a priority, the CX810 is the clear winner.

• CX810: Full-color night vision via ColorX, no IR glow
• RLC-843A: Black-and-white IR night vision up to 30m
• For low-light areas without ambient light, CX810 outperforms

Coverage and Field of View

The RLC-843A is a Pan-Tilt-Zoom (PTZ) camera with a wide 360° pan range and a 90° tilt, allowing you to remotely control the view and zoom in on specific areas. Its field of view is 90° horizontal, which is narrower than the CX810's 100° horizontal FOV. The PTZ capability gives the RLC-843A unmatched flexibility for monitoring large, open spaces where you need to actively track movement.

On the other hand, the CX810 is a fixed-lens camera with a wider 100° field of view, covering more area in a single frame. This makes it ideal for monitoring wide entryways, backyards, or parking lots without needing to move the camera. For static surveillance with broad coverage, the CX810's fixed lens is simpler and often more reliable.

• RLC-843A: 360° pan, 90° tilt, 90° FOV – active tracking
• CX810: Fixed 100° FOV – passive wide coverage
• Choose PTZ for active monitoring, fixed for complete area coverage

Smart Features and AI Detection

Both cameras come with Reolink's advanced AI-powered person and vehicle detection, which reduces false alarms from moving leaves or animals. They also support motion zones and customizable alarm schedules. However, the RLC-843A adds auto-tracking, which automatically follows a person or vehicle as it moves across the scene—a powerful feature for deterring intruders.

The CX810, while lacking auto-tracking, benefits from a more robust smart detection system thanks to its ColorX sensor, which provides clearer images for AI algorithms to work with, especially at night. Both cameras support two-way audio and siren alerts, but the CX810's superior night image quality gives it an edge in identifying threats after dark.

• Both: person/vehicle detection, motion zones, two-way audio
• RLC-843A: auto-tracking for active deterrence
• CX810: better night-time AI accuracy due to color visuals

Storage and Integration

Both cameras support microSD cards (up to 256GB) and can record to Reolink NVR systems. They are ONVIF compliant, meaning they can integrate with third-party NVRs and software. If you're building a multi-camera system, you might consider pairing these with the RLK8-800D4 or RLK8-811B4 NVR bundles for seamless integration and centralized management.

The RLC-843A's PTZ functionality requires more bandwidth and storage due to continuous movement and zoom, while the CX810's fixed viewing angle results in more predictable file sizes. For long-term storage, the CX810 may be more efficient, but both offer ample flexibility for home or business use.

• Both: microSD up to 256GB, ONVIF compatible
• Compatible with Reolink NVR systems like RLK8-800D4
• CX810: more predictable storage usage; RLC-843A: higher due to PTZ

In summary, the Reolink CX810 is the superior choice for those who prioritize full-color night vision and wide static coverage, making it ideal for residential driveways or commercial perimeters. The RLC-843A, with its PTZ flexibility and auto-tracking, is better suited for active monitoring of large dynamic areas. Assess your specific needs—if night detail is critical, go with the CX810; if you need to actively follow subjects, the RLC-843A won't disappoint. Both are excellent 4K PoE cameras, and you can explore more options on Reolink's official store.