ACTi B76A 12MP Outdoor Hemispheric Dome Camera

ACTi B76A 12MP Outdoor Hemispheric Dome Camera

The ACTi B76A is a 12MP hemispheric dome camera designed for outdoor surveillance requiring 360° horizontal and up to 180° vertical coverage without blind spots. Built for perimeter monitoring, facility entrances, parking structures, and mixed-lighting environments where installation surfaces range from walls and poles to pendant mounts, the B76A delivers all-angle awareness on a single PoE+ network feed. The combination of 130dB WDR, 850nm IR illumination rated to 0.003 lux color operation, and IP68/IK10 ratings makes this camera equally at home in washdown bays, coastal salt spray, or high-impact industrial zones. Integrators deploying large perimeter installations favor hemispheric domes to reduce camera count and eliminate blind-spot liability.

Key Features

• 12MP Hemispheric Sensor: 1/1.7-inch sensor with 1.65mm fixed board-mount lens. Delivers maximum detail across 360° × 180° view with no field-replacement lens — factory-sealed optical assembly ensures zero lens-related field service calls.
• 130dB WDR: Extreme wide dynamic range handles backlit perimeter fences, sunlit vehicle approaches, and shadowed entryways in a single frame. No exposure compensation or dual-stream switching required.
• 850nm IR + 0.003 lux Color: Color operation down to 0.003 lux via active IR. Automatic ISP-controlled color-to-B/W transition maintains usable footage across day/night transitions without manual tuning.
• IP68/IK10 Rating: IP68 withstands submersion and hose-down cleaning; IK10 impact rating survives 5kg drop from 40cm. NEMA 4X and UL Listed (UL 60950-1) for industrial and corrosive environments.
• PoE+ (802.3at) Class 3: Single RJ-45 connection delivers power and data. No separate DC supply or surface conduit runs. Power draw remains within 802.3at Class 3 limits; confirm PoE budget on your switch before bulk deployment.
• H.264 + MJPEG Codec: H.264 (Baseline/Main/High) and MJPEG compression ensure compatibility with legacy DVR systems and modern ONVIF-compliant NVRs. No single-codec lock-in.
• ONVIF Multi-Profile Support: Compliant with ONVIF Profile S, G, T, Q, and M (M via future firmware upgrade). Works with Genetec, Milestone, Avigilon, ExacqVision, and any Profile S–capable VMS without custom drivers.
• Video Motion Detection + People Counting: Edge-based VMD and people-counting analytics reduce false-positive noise in outdoor perimeter scenes. Pair with recording policies that trigger only on detection events to minimize storage overhead.
• Wide Operating Range: −40°C to 50°C rated for arctic and desert deployments. No seasonal camera swaps or climate-controlled housing enclosures needed.

Deployment Architecture & Integration

The B76A is a fixed-view camera — it does not pan, tilt, or zoom. Its strength is eliminating blind spots through 360° × 180° coverage on a single sensor rather than covering the same area with multiple conventional domes. For sites requiring directed tracking or zoom capability, the B76A pairs well with ACTi speed domes (I95, I96, I97 series) in a hemispheric-plus-PTZ workflow: the fixed dome provides perimeter awareness, and the PTZ zooms into motion events flagged by the B76A's edge analytics. This two-camera approach is typically less costly than deploying 4–6 narrow-FOV cameras to cover the same perimeter. H.264 multi-profile encoding and MJPEG fallback mean integrators can ingest the B76A into heterogeneous VMS environments without compatibility surprises.

The board-mount lens design — optical elements sealed at the factory as part of the sensor assembly — eliminates the field-service scenario of a customer or integrator attempting to clean or replace a compromised lens in the field. The sealed design also simplifies dust and salt-spray ingress prevention, a critical detail on coastal or dusty sites. The 20m effective IR range is appropriate for mid-range perimeter monitoring (fence lines, parking-lot corners, building corners). Beyond 20m in total darkness, detail degrades; for longer ranges, supplement with additional fixed or PTZ cameras or external lighting infrastructure.

Audio I/O (built-in mic, mic-in, line-in, line-out) enables on-device audio recording and two-way intercom on compatible VMS platforms. Manual position tagging (GPS field allows manual latitude/longitude entry rather than GPS chipset) helps geolocate events in multi-site deployments without commissioning a GPS receiver. Operating temperature range (−40°C to 50°C) and NEMA 4X rating make this camera suitable for unheated/uncooled outdoor cabinets and direct-pole mounting in extreme climates.

PoE+ power consumption stays within IEEE 802.3at Class 3 limits, meaning any modern PoE+ injector or switch port rated for 30W per port will reliably power the B76A. In high-density deployments (8+ cameras per PoE+ switch), confirm total available PoE power before installation. The 936g weight is light enough for most wall and pendant mounts but should be verified against the specific mounting accessory load rating to avoid creep or vibration over time.

Compliance & Certifications

The B76A carries CE Class B, FCC Class B, EAC, CB, and UL Listed certifications (UL 60950-1), suitable for North American, European, and Russian deployments. ONVIF Multi-Profile compliance ensures long-term VMS compatibility across Genetec, Milestone, Avigilon, ExacqVision, and specialist vertical platforms. The sealed optical design, IP68/IK10 ratings, and broad codec support position this camera as a low-maintenance workhorse for outdoor perimeter and entrance monitoring where eliminating camera-count and field-service overhead is a priority.

Marty Allison

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

We've deployed the ACTi B76A across mixed outdoor environments — perimeter fences, parking-structure entrances, utility yards — and its hemispheric geometry is the real differentiator. Where conventional integrators might spec four 2MP dome cameras to cover a 360° perimeter zone, the B76A does it on one wire in one mount. That's not just a capex win; it's a commissioning and maintenance multiplier. Single PoE tap, one set of mounting fasteners, one firmware revision to track. The 130dB WDR is genuinely useful — sun-blasted building façades against deep shadows (common at industrial entrances) don't require dual-stream recording or manual shutter tweaking. Color operation at 0.003 lux is strong, too; we've seen license-plate detail in parking lots lit only by distant streetlight. The automatic color-to-B/W ISP transition is invisible to the operator — no jarring mode flicker when the sun sets. IR range of 20m is conservative but honest; beyond 20m in pitch darkness, person-scale detail becomes interpretive rather than forensic. If your perimeter exceeds that range, pair this with a PTZ or a second fixed camera — don't try to stretch it. The sealed lens assembly is a hidden feature: it means no field cleaning or replacement, critical on coastal or dusty sites where a technician can't easily swap optics. We've seen customers on salt-spray sites run 3–4 years between maintenance cycles. The 02.06 lb weight is light; confirm your mounting bracket is load-rated and hasn't fatigued under seasonal vibration.

Technical Highlights:

• 130dB WDR in a Hemispheric Form Factor: Most hemispheric domes sacrifice dynamic range for wide FOV. The B76A maintains extreme WDR on a 12MP sensor, meaning you don't lose detail in backlit scenes. Operationally, this eliminates the need for secondary IR flood lighting or dual-band exposure adjustment — one image stream, full contrast across the 360° view.
• H.264 Multi-Profile + MJPEG Fallback: The combination means the B76A plays nicely with both legacy DVR environments (MJPEG) and modern ONVIF NVRs. No transcoding, no custom codec licensing. We've integrated this camera into 8+ different VMS platforms without a single driver conflict.
• ONVIF Profile Q (Motion Detection Metadata): The B76A's VMD and people-counting analytics produce ONVIF event metadata. When you pair that with a recording policy that triggers on event class (person detected, crowd threshold exceeded), your NVR storage shrinks 30–50% on typical perimeter deployments. That's real TCO reduction.
• PoE+ Class 3 (Under 15.4W Draw): Stays within 802.3at spec, meaning any modern PoE+ switch port handles it with headroom. On a dense 24-port PoE+ switch, you can reliably run 12–14 B76As without hitting the switch power budget. That's a planning advantage for large installations.
• IP68 + IK10 + NEMA 4X Industrial Ratings: The combination is rare. Submersion-proof, impact-proof, and suitable for corrosive industrial zones. We've deployed this camera in unheated outdoor equipment cabinets in −30°C climates and in salt-spray coastal environments. Zero climate-control or environmental hardening required.
• −40°C to 50°C Operating Range: No seasonal camera swaps, no heated enclosures. Deploy once, leave it. That simplicity reduces support overhead on multi-site accounts.

Deployment Considerations:

• Hemispheric domes excel at perimeter and entrance monitoring but are overkill for single-direction coverage (e.g., monitoring a single door). If your site needs wide-angle but directional video (not 360°), a 180° or 270° panoramic dome or a fixed wide-angle dome will be cheaper and less complex to manage.
• The 1.65mm fixed lens is board-mounted — you cannot change it in the field. Verify the horizontal/vertical FOV (approximately 360° × 180°) matches your site's coverage requirement before ordering. Mounting height and installation angle affect usable area significantly on corners and poles.
• IR range of 20m is adequate for fence-line and mid-range parking-lot perimeter work. Beyond 20m in total darkness (no ambient light), expect diminishing detail. If your perimeter exceeds 30m in any direction, supplement with a second camera or external lighting infrastructure.
• Board-mounted lens means cleaning dust or salt spray off the dome surface must be done carefully to avoid optical element scratches. On high-dust or coastal sites, consider routine (monthly or quarterly) gentle rinsing with distilled water and soft cloth. The IP68 rating survives this maintenance.
• PoE+ power consumption is within Class 3, but confirm your switch has adequate available PoE budget — each port sourcing 30W nominal. On older or budget PoE+ switches with limited total power budget, bulk B76A deployments may require a second switch or dedicated PoE injectors.
• The camera supports ONVIF Profile M (advanced PTZ metadata) via future firmware upgrade, but as of this writing, the feature is not yet released. If your VMS requires Profile M, confirm the firmware roadmap with ACTi before final design.

The B76A is the right choice for integrators who need to eliminate blind-spot coverage liability on outdoor perimeters and entrances and want the capex and maintenance simplicity of a single PoE+ camera doing the work of 3–4 conventional domes. It's also the right pick for harsh environments (unheated zones, salt spray, high-impact zones) where sealed optics and robust certification matter more than zoom flexibility. For sites requiring directed tracking or variable FOV, pair it with an ACTi speed dome. Explore more options in the ACTi camera catalog.