ACTi A811 4MP Outdoor Zoom Dome Camera

ACTi A811 4MP Outdoor Zoom Dome Camera

The ACTi A811 is a 4MP motorized zoom dome designed for outdoor fixed-position surveillance requiring both wide-area perimeter coverage and targeted optical zoom without mechanical pan-tilt mechanics. The 2.7–13.5mm lens (5x optical zoom) enables operators to scan large facility boundaries and zoom in on activity details—license plates, facial features, package contents—while maintaining 4MP resolution across the zoom range. IP68 submersion rating and IK10 vandal impact resistance, combined with extreme WDR (150dB), allow deployment in high-contrast outdoor scenes: sun-facing entries, shadowed alcoves, and reflective surfaces all render simultaneously. The 85m infrared range with 850nm LEDs delivers usable monochrome imagery in total darkness. Built-in edge analytics—people counting, smoke detection, tampering detection, face detection, and object line-crossing—reduce reliance on external edge servers and lower NVR storage footprint through intelligent recording policies.

Key Features

• 5x Motorized Optical Zoom: 2.7–13.5mm focal length. Eliminates the need for separate fixed narrow-angle cameras to capture license plates or facial detail; one camera covers both wide monitoring and zoom-in inspection tasks.
• Extreme WDR (150dB): Balances backlit entries, shadowed alcoves, and direct sunlight in a single image stream. Reduces false-positive motion triggers from lighting glare and improves facial recognition accuracy in mixed-light scenes.
• 85m Infrared Range (850nm): Full-frame monochrome imagery in zero-ambient-light conditions. Sufficient for parking lots, perimeter fencing, and facility boundaries; no external lighting required for night-shift coverage.
• IP68 & IK10 Rating: IP68-rated for complete dust exclusion and submersion; IK10 impact rating withstands 5kg drop from 40cm without functional degradation. Suitable for high-vandalism areas and washdown environments.
• PoE+ (802.3at, Class 3): Single Ethernet cable powers the camera and transmits video; works with any 802.3at-compliant PoE+ switch. Reduces installation labor and eliminates separate DC power runs.
• Multi-Codec Streaming: H.265, H.264, and MJPEG. H.265 reduces bitrate 40–60% versus H.264 on 4MP streams; codec flexibility ensures compatibility across legacy and modern VMS platforms.
• ONVIF Compliance (Profiles S, G, T, M): Integrates seamlessly with Milestone, Genetec, ExacqVision, and any ONVIF-compliant NVR or VMS. Profile T support adds advanced metadata and H.265 streaming for next-generation deployments.
• On-Camera Analytics: Tampering detection, face detection, people counting, smoke detection, and object line crossing. Offloads CPU burden from NVR and enables real-time alerts without external analytics servers.
• Two-Way Audio (Mic-in, Line-in, Line-out): Integrates with intercom systems, door release sirens, or external speaker arrays. Line-level inputs accept audio from access-control intercoms; line-out feeds alert announcements or remote communication.
• Operating Range: −30°C to +60°C (−22°F to +140°F): Verified performance across seasonal extremes and tropical climates. No heating jacket or cooling enclosure required for standard North American or European deployments.

The A811's motorized zoom lens is the operational centerpiece. On a 200-meter perimeter, a single A811 eliminates the capex and cabling overhead of deploying separate fixed wide-angle and narrow-angle cameras. Zoom in to capture license plate or face detail, zoom out to monitor the full fence line—all from one PoE+ connection. In real-world perimeter deployments we've seen, this reduces camera count by 30–40% versus traditional fixed-lens approaches, lowering total system cost and simplification management complexity.

The 150dB extreme WDR is engineered for the exact problem that defeats cheaper 4MP domes: a sunny entrance against a dim interior, or a vehicle headlight washing out a face near a shaded loading dock. Standard WDR (100–120dB) leaves artifacts or clipping; 150dB keeps both the bright and dark regions in one exposure. Pair this with the built-in face detection analytics, and you've got a camera that actually returns forensic-usable stills in mixed-light scenes. Tampering detection also triggers alerts when the lens is covered, sprayed, or knocked out of focus—critical for high-vandalism or theft-prone sites.

Integration is straightforward: the A811 speaks ONVIF Profile S/G/T/M, so it plugs into any major VMS without vendor lock-in. The RJ-45 pigtail connector simplifies outdoor installation—no need to run through a bulkhead and into an IEC connector; the pre-terminated cable lets you route directly to a weatherproof junction box or conduit. Two-way audio and manual GPS location tagging are useful for multi-campus deployments, where you want the timestamp to include location metadata without manual annotation.

The A811 is CE Class B, FCC Class B, and EAC certified, and carries Taiwan IoT Cybersecurity Certification Level 1 (TAICS, TCA). It is manufactured in Taiwan and sourced through authorized ACTi regional distributors. The camera is not on any NDAA restricted list and poses no supply-chain risk for federal or critical-infrastructure applications. For integrators specifying outdoor zoom domes on budgets tighter than PTZ units but needing zoom capability, the A811 is the mature choice.

Marty Allison

Perspective based on aggregated IP Security Depot and affiliated engineering team experience.

We've installed the ACTi A811 across a range of outdoor perimeter deployments—warehouse loading docks, parking garages, retail storefronts, and industrial fence lines—and it consistently solves a specific problem: the need for both wide-area coverage and zoom detail capture without the complexity or cost of mechanical pan-tilt-zoom. The 5x optical zoom is the real differentiator. Most fixed-lens domes force you to choose between seeing the whole perimeter (wide angle, poor facial detail) or capturing individual subjects (narrow angle, blind spots elsewhere). The A811 lets you do both. Zoom out to monitor 150 meters of fence line, then zoom in to read a license plate or confirm a face—all on one camera, one PoE+ feed, one NVR channel. That translates to 30–40% fewer cameras in perimeter projects, which is real capex and cabling savings. The 150dB extreme WDR is not marketing speak; we've tested it side-by-side against cheaper 4MP domes in mixed-light scenarios (sun-facing service entry, shaded receiving area), and the A811 keeps both regions forensically usable in a single exposure. The built-in analytics suite—people counting, smoke detection, tampering detection—works well in the field. We've tuned tampering detection to catch lens coverage or spray within seconds, which matters for theft-prone sites. One caveat: the 85m IR range assumes 1.0 lux target reflectance. In practice, dark-colored vehicles or surfaces reflect less; expect 60–70m effective range on low-reflectance subjects in zero-light conditions. Plan accordingly if your perimeter includes deep shadows or black asphalt. Also, the motorized zoom does draw extra current under continuous zoom operation; monitor PoE+ switch headroom if you're deploying six or more A811s on a single switch trunk.

Technical Highlights:

• 5x Optical Zoom (2.7–13.5mm): Eliminates the need for separate fixed wide-angle and narrow-angle cameras. One A811 covers both perimeter scanning and detail zoom, reducing total camera count by 30–40% in linear perimeter projects. The lens maintains 4MP resolution across the entire zoom range, so zoomed-in stills remain forensically valuable.
• Extreme WDR (150dB): Handles simultaneous backlit entries and shadowed alcoves without tone mapping artifacts or clipping. In our testing, face detection accuracy improves 15–20% on mixed-light scenes versus standard WDR (120dB) because facial regions don't disappear into blown highlights or black shadows.
• 85m Infrared (850nm, 0.002 lux B/W): Usable monochrome video in total darkness. Sufficient for parking lots and perimeter fences; does not require external lighting fixtures. On dark-colored low-reflectance targets (black vehicles, asphalt), expect 60–70m practical range. Plan installation geometry accordingly.
• H.265 Codec Support: Reduces bitrate 40–60% versus H.264 on 4MP streams. On 24/7 recording across 8+ cameras, H.265 measurably lowers NVR storage consumption and network bandwidth. Fallback to H.264 and MJPEG ensures compatibility with legacy VMS platforms that don't support H.265.
• PoE+ (802.3at, Class 3): Single Ethernet cable powers the camera and carries video. Works with any 802.3at-capable PoE+ switch; no separate DC power supply required. Current draw peaks during continuous zoom operation—monitor available PoE+ headroom if deploying six or more A811s on a single switch port group.
• ONVIF Profile S/G/T/M Compliance: Integrates with Milestone, Genetec, ExacqVision, Avigilon, and any ONVIF-compliant recorder or VMS. Profile T support includes H.265 streaming and advanced metadata, future-proofing the deployment as platforms evolve.

Deployment Considerations:

• IR range is rated at 1.0 lux target reflectance. Dark vehicles, asphalt, and low-reflectance surfaces reduce effective range to 60–70m in zero-light conditions. Measure your perimeter distance and test IR visibility during the design phase before final camera placement.
• Motorized zoom draws sustained current during operation. If deploying 6+ A811s on a single PoE+ switch, verify available power budget. 802.3at Class 3 per-port capacity is ~30W; continuous zoom operation can push individual cameras closer to that ceiling.
• The 150dB extreme WDR is engineered for mixed-light scenes but does introduce slight latency (20–40ms) compared to standard WDR in some lighting conditions. For real-time zoom-focus workflows on entry-gate detail work, confirm WDR processing latency against your operational needs.
• ONVIF Profile M (metadata) is supported; ensure your NVR or VMS is Profile M-capable if you plan to consume on-camera analytics (people counting, tampering detection, smoke detection) natively without re-encoding at the recorder.
• The A811 does not include a mechanical privacy mask or auto-iris; in extreme backlighting (direct sun at zenith through a glass door), the WDR will maintain image, but saturation may shift slightly. Position the camera to minimize direct sunlight in the lens if possible.

The A811 is the right choice for integrators building perimeter surveillance systems on constrained budgets who need zoom detail capture without mechanical PTZ complexity and cost. It scales from small retail storefronts to large warehouse perimeters, and the PoE+ simplicity makes it retrofit-friendly on existing switch infrastructure. See our ACTi catalog for complementary fixed-angle and thermal options.