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When a drone needs to be heard, every decibel counts. RIBRI recently subjected the RA11Z — its dronemounted directional acoustic hailing device — to comprehensive outdoor field testing, capturing real‑world performance data across operational scenarios.The RA11Z is a dronemounted directional acoustic hailing device. Purposebuilt for fast, onsite deployment, it attaches to a UAV in approximately 1.3 seconds and delivers intelligible voice commands across multiple kilometers. It combines aerial maneuverability with targeted, longdistance sound coverage to support highdemand operational scenarios.

Intruding low-flying UAS are no longer a marginal risk for critical infrastructure. Conventional sensors often miss small drones at low altitude, and poor visibility can turn radar or optical coverage into a patchwork of blind spots. RIBRI answers that gap with Heimdall, a passive acoustic C-UAS sensing solution built to listen first and alert fast.Part of the RIBRI Hearing product line, Heimdall detects unauthorised drones by capturing their distinctive acoustic signatures rather than relying solely on radar, RF, or visual tracking. Because it "hears" the target, it performs in conditions that routinely defeat other sensors—darkness, fog, and rain—while keeping the false-alarm burden low. By adding an acoustic layer to a multi-sensor security stack, Heimdall gives operators a clearer, earlier picture of airborne threats.

For years, projecting a clear warning across open water or a busy quay meant bolting together a speaker, a spotlight, a surveillance camera and a pan-tilt mount — four separate rigs, four power runs, four points of failure. RH20Y ends that juggling act. RH20Y is RIBRI's multifunctional integrated Long range acoustic hailing device, extending the Voice (Acoustic Hailing) line with built-in optics. One IP65 housing combines a high-intensity sound module, a 5 W green laser and LED searchlight, a 4 MP 32× zoom camera and a servo pan-tilt head — engineered to military-grade MIL-STD-810H standards for long-range alerts, area surveillance and emergency command in any weather.

Have you noticed that electronic and mechanical device deployed near the sea always ages and fails unexpectedly faster? Coastal surveillance cameras slowly lose clarity, offshore base stations frequently glitch, and shipborne devices corrode prematurely — even without obvious physical damage or mechanical wear. These common issues, including mysterious rusting, intermittent short circuits and early device breakdowns, all trace back to one easily overlooked culprit: salt fog. Much more harmful than regular air humidity, salt fog carries reactive chloride ions that induce ongoing electrochemical corrosion on metal and electronic parts. It steadily erodes exposed device day and night, quietly shortening the service life of most coastal, island and marine industrial devices.