Remote Listening System
Eye‑safe, stealthy system for remote acoustic surveillance via windows or light surfaces; detects speech up to 300 m.
Key Features:
✔️ Range: Up to 300 m
✔️ Laser: Invisible infrared, interferometric/Doppler backscatter detection
✔️ Targets: Windows, paper, cloth, plastic, thin/light surfaces
✔️ Audio: High speech intelligibility, robust to ambient noise
✔️ Angles: Operates from any angle with minimal surface vibration
✔️ Stealth: Eye‑safe, low-power, covert operation
✔️ Ease of use: Fast setup, simple aiming
✔️ Output: Real-time audio monitoring and recording
✔️ Durability: Robust DSP & laser system for field operations
Remote Listening System
The Remote Listening System utilizes interferometric laser technology with advanced DSP (Digital Signal Processing) to detect acoustic signals across 300 meters. The device employs an invisible infrared laser that captures backscatter laser light frequency shifts caused by speech vibrations. Operators retrieve verbal communication from metallic elements, cloth, paper, and plastic surfaces. The system operates from any angle without requiring physical installation at target locations. Eye-safe infrared emission eliminates detection risk through standard cameras or human observation. Speech intelligibility remains optimal in noisy environments through noise-robust filtering.
The system detects surface vibrations across thin, soft, or lightweight materials including window panes, seat cushions, wall-mounted pictures, indoor plant leaves, and clothing. The infrared beam converts vibrations into electrical signals, amplifies and decodes them into standard audio output. Optimal detection occurs on flexible, resonant materials with lower mass. The system operates via windows and small openings without line-of-sight requirements. Deployment occurs in minutes with straightforward targeting. Minimum laser power ensures extended operational capability while maintaining safety standards.
The Remote Listening System supports intelligence gathering in urban environments where direct access is restricted. Law enforcement agencies employ it for monitoring suspect communications through building windows and vehicle interiors. Border security teams utilize it for perimeter surveillance and threat assessment. Counterintelligence units conduct speech interception from protected facilities. Tactical operations benefit from acoustic monitoring without exposing personnel to hostile environments.
Tactical Supply Pakistan delivers this advanced surveillance technology with proven field reliability and operational support. Their expertise ensures clients receive tools that balance capability with compliance standards.
Can this Listening System detect speech through thick building materials like concrete walls?
No, performance depends on material flexibility and mass. Thin, resonant surfaces like windows achieve highest sensitivity. Solid, rigid materials absorb rather than reflect laser frequency shifts, significantly reducing speech signal extraction capability.
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