ACTi ACTi Q251

SPECIFICATIONS · ACTI Q251

About the ACTi ACTi Q251

The ACTi ACTi Q251 is a long-distance bullet body that mounts cleanly under eaves, on poles, or along fencelines. 4MP sits in the sweet spot for installations where storage is a concern but you still want crisper retroactive zooming during incident review. A short-range IR illuminator (≤20 m) handles entrance vestibules, indoor corridors, and small enclosed spaces. Beyond 20 meters the IR fall-off causes faces to lose detail in pure darkness. A standard 50–80° horizontal FOV mimics how a person sees a scene and works well for general-purpose monitoring of rooms, parking spaces, and perimeter walls without distortion. The Super Low Light sensor is the feature most installers care about for residential and parking-lot use — it preserves identification detail when older cameras lose all color and most contour.

Best use cases for this camera

Coverage at Different Distances

Field of View Visualization

Night Vision Performance

Installation tips for the ACTi Q251

Coverage geometry & DORI distances

At a 5-metre standoff the ACTi ACTi Q251 covers about 7.3 m of scene width; at 10 m that grows to 14.5 m, and at 20 m to 29.1 m. Translating those numbers through EN 62676-4 pixel-density thresholds, the camera can detect a person up to 66 m, observe up to 26 m, recognise up to 13 m, and produce identification-grade detail (the ≥250 px/m bar used by Polish and EU courts as evidentiary) up to 7 m. Effective range above the identify threshold relies on supplementary lighting or a longer-focal-length optic — the geometry above assumes the 4.0mm lens declared by the manufacturer.

Power & cabling

The ACTi ACTi Q251 draws an estimated 7.5 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. Even a narrowly-aimed bullet camera can incidentally record passers-by, so the Art. 13 sign at the entry point applies regardless of how tightly the lens is framed.

Installer time & cost (rough estimate)

A typical EU installer quotes 3–4 h of labour per bullet camera of this class (approximately €135–€185 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

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