Created on 02.04

CTRLPA JT47HD Vehicle-Mounted Warning Loudspeaker System

JT47HD directional alert speaker with 145dB output, 1500m range, 10° beam, and IP56 protection.

The CTRLPA JT47HD is a vehicle-mounted warning loudspeaker system categorized as a Directional Sound Disperser. Specifically engineered for highway emergency management, tunnel construction broadcasting, and traffic information dissemination, this device features a yellow metal chassis protected by a dense perforated mesh grille. An integrated top handle facilitates mobile deployment. Its core function utilizes directional sound wave technology to achieve long-range, high-clarity voice broadcasting, effectively delivering alerts even in noisy environments.

1. Core Technology & Functional Analysis

Directional Sound Technology: Utilizing beamforming algorithms, the system achieves focused sound propagation. With an effective coverage range extending hundreds of meters, it ensures precise voice transmission in complex environments while minimizing sound diffusion and interference.
High-Power Output: Supporting power output between 300W and 600W, the device guarantees clear audio projection even in high-noise zones such as tunnels and highways.
Smart Interconnection: The system supports integration with radar, cameras, and drones, enabling automated warning triggers to enhance emergency response efficiency.
Environmental Durability: Built with waterproof, dustproof, and high-temperature resistance features, it is suitable for harsh outdoor conditions. Compatibility with solar charging ensures prolonged, stable operation.

Car interior with dashboard display, music notes, and scenic road view.

2. Typical Application Scenarios & Deployment Strategies

Highway Safety Assurance System: Deployed at critical locations such as accident-prone zones, tunnel entrances, and construction sites to form an "Acoustic Cordon." This establishes a three-dimensional command structure. By linking with AI surveillance systems, it automatically detects traffic incidents and triggers directional alerts to guide vehicles in slowing down, changing lanes, or stopping.
Tunnel Construction Broadcasting: During tunnel projects, units are positioned at the construction zone entrance and key operation points to provide high-volume announcements, ensuring safety and efficiency. The system supports mobile coverage by integrating with construction vehicles and drones.
Emergency Warning & Public Security: In scenarios involving emergencies, disaster alerts, or counter-terrorism operations, the high-decibel, focused sound output effectively disperses crowds and safeguards public security. It supports remote control and multi-point coordination via integration with emergency command centers.

Highway with directional audio targeting path in gradient colors.

3. System Integration & Intelligent Upgrades

Integration with AI Surveillance: By connecting to data from fixed high-pole monitors, mobile detection units, and drone patrols, the system builds a "Full-Process Monitoring + Mobile Sensing + Cruise Detection" intelligent perception network. This enables automatic detection, warning, and response to traffic events.
Drone Collaboration: Combined with drone loudhailing capabilities, it creates a "Remote Communication + Rapid Response" model, improving accident handling efficiency. Drones serve as mobile PA platforms, covering areas unreachable by fixed devices.
Radar Integration: By detecting speed and distance data via radar, the system automatically triggers directional warnings, establishing a closed-loop management system of "Detection - Warning - Response."

Roadwork vehicle on highway with collision warning overlay, surrounded by greenery.

4. Maintenance & Management Recommendations

Regular Inspections: It is recommended to conduct a comprehensive quarterly inspection of the power system, speaker units, control modules, and wiring to ensure optimal working condition.
Cleaning & Care: Regularly clean dust from the surface and mesh grille to prevent blockage affecting sound quality. After rainy seasons or exposure to humidity, inspect the interior for signs of moisture.
Firmware Updates: Monitor firmware updates released by the manufacturer and upgrade promptly to obtain the latest feature optimizations and security patches, thereby enhancing system stability and compatibility.
Emergency Drills: Regularly organize operational drills for personnel to familiarize them with device operation and linkage mechanisms, ensuring rapid and accurate usage during actual emergencies.

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