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RA11Z

Peak SPL@1m: 149dBA, Max acoustic range: 794m
72Wh built-in lithium battery to sustain long-duration aerial broadcasting tasks
Compact size 274×226×274mm, lightweight 3.7kg for drone payload installation
Passes MIL-STD-810H certification with IP65 dustproof and waterproof protection
Adopts TCP/IP interface to realize remote wireless control via ground terminals
Supports real-time voice broadcast, message loop playback and long-distance crowd warning
Full OEM/ODM customization for appearance, mounting brackets, control UI and system languages
Adaptable for large-scale event on-site voice broadcasting and on-demand information release
Available for helicopter-borne aerial alert and cross-region emergency evacuation guidance

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Product Description

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Product Overview

The RA11Z is a drone-mounted acoustic hailing device designed for aerial voice transmission, real-time broadcasting, and loop playback. It functions as a mobile emergency alarm system and public address system for crowd control management, disaster evacuation, emergency response communication, and order maintenance at large events. With its lightweight, portable design and efficient acoustic technology, this drone speaker enables stable, clear voice transmission over large high-altitude areas, supporting mass notification and emergency operations.

Description of Characteristics

• Powerful Sound Coverage and Long-range Transmission

The device delivers a peak sound pressure level (Peak SPL@1m) of 149 dBA with a maximum range of 794 meters, enabling effective long-distance audio delivery and efficient emergency information dissemination.

• High Acoustic Wave Directivity

The beam angle remains within ±15° at 2 kHz and-3 dB, enabling precise directional transmission of voice/signals while preventing interference in non-target areas.

• Excellence in Broadcast and Voice Quality

The frequency response spans 250Hz to 7000Hz, fully covering common audio ranges such as human voices, alarm sounds, and broadcasts with high sound fidelity.

• Long Battery Life

Equipped with a 72 Wh lithium battery for sustained and stable performance.

• Lightweight and Portable Design

The device measures only 274mm × 226mm × 274mm with a weight as low as 3.7kg, delivering excellent acoustic performance while maintaining portability—making it ideal for deployment on aerial drones.

• Military-grade Environmental Adaptability and Reliability

Certified under MIL-STD-810H standards (including extreme temperatures, humidity, rain exposure, and vibration), it achieves IP65 protection rating and maintains stable performance even in harsh environments.

Table of Key Equipment Parameters

Parameter	Details
Peak SPL@1m	149dBA
Continuous SPL@1m	139dBA
Max Range	794m
Acoustic Beam	±15°@2kHz/-3dB
Dimension(WDH)	274mm226mm274mm
Weight	3.7kg
IP Rating	IP65

FAQ

What usage modes does this product support?

The RA11Z is designed for drone platforms with a payload capacity of no less than 3.7 kg.

What control methods does this product support?

The RA11Z features a TCP/IP protocol data interface, combined with an image transmission module and control terminal, enabling remote wireless control functions such as voice announcements, broadcast messaging, and crowd dispersal.

Does this product support direct operation via a drone control platform?

The RA11Z can be customized to fit customers' specific drone platforms.

Is this product compatible with airborne platforms such as helicopters?

The RA11Z can be installed on airborne platforms such as helicopters. When paired with our control terminals (including wired terminals and PDAs), it enables direct operation from the airborne platform.

In what environments can this product be used?

The RA11Z features a low-temperature resistant lithium battery, enabling stable operation in environments ranging from-40°C to +60°C. With an IP65 protection rating, it effectively withstands various harsh weather conditions.

Does this product support OEM/ODM customization?

The RA11Z supports OEM/ODM customization services, offering tailored production of control languages, exterior colors, logos, device nameplates, and fixed mounting brackets based on client requirements for specific platforms. It also provides customization of functions and user interfaces to meet specialized and personalized application needs.

Application

The RA11Z is primarily used in mass notification, platform integration, and public safety applications.

Common application scenarios:

• Mass Notification

The RA11Z, when paired with drones or airborne platforms, operates without being constrained by ground conditions and is ideal for broadcasting, notifications, and early warning alerts in scenarios such as fire emergencies and public address systems in forests.

• Platform Integration

The RA11Z features a lightweight design specifically engineered for aerial platforms such as airborne mounted systems and Unmanned Aerial Vehicles (UAVs).

• Public Safety

The RA11Z, when used with drones, eliminates ground constraints and enables rapid deployment to target areas, making it widely applicable in law enforcement scenarios.