Whelen WPS4000 Series: Advanced Outdoor Warning and Voice Systems
When clear communication can mean the difference between safety and chaos, the Whelen WPS4000 Series stands as a premier solution. Designed for high-stakes applications such as large campuses, industrial sites, military bases, and community-wide emergency systems, the WPS4000 Series offers unmatched clarity, power, and reliability. This cutting-edge system ensures critical alerts are delivered effectively, making it an invaluable tool for mass notification and public safety.
Exceptional Engineering for Unrivaled Performance
The WPS4000 Series integrates advanced rotating siren technology with high-fidelity voice projection. This combination guarantees that vital instructions reach their audience with both clarity and authority. The series features two primary configurations designed to suit varying coverage needs and operational environments.
WPS4003: Ideal for Mid-Sized Applications
The WPS4003 configuration utilizes three active speaker cells powered by high-efficiency 400-watt drivers. Combined, these components produce a robust 1,600-watt tone output and up to 2,000 watts of voice output. With an estimated 70 dB range extending up to 5,400 feet, this model is perfectly suited to mid-sized facilities, industrial complexes, or smaller community areas.
WPS4004: Designed for Extended Coverage
Equipped with four active speaker cells, the WPS4004 offers increased power and range. Featuring the same high-efficiency 400-watt drivers and output levels as the WPS4003, it delivers an extended estimated 70 dB range of up to 6,000 feet. This makes the WPS4004 an ideal choice for larger facilities, sprawling campuses, and intricate urban deployments.

Both configurations prioritize acoustic performance, ensuring messages maintain their integrity even in environments with high ambient noise or challenging weather conditions.
Integrated Voice and Tone Capabilities
The WPS4000 Series embodies Whelen’s A.I.D. strategy, which stands for Alert, Inform, and Direct. This approach ensures the system meets diverse public safety needs, whether for weather emergencies, industrial risks, or security incidents.
Multi-Functionality at Its Core
Each system comes equipped to deliver both live public address and pre-recorded messages. Operators can store up to 28 pre-recorded messages, with options to expand the library further. Six standard warning tones are included—Wail, Whoop, Attack, Hi-Lo, Alert, and Airhorn—providing versatility for various warning scenarios.
Rotating sirens project tones omnidirectionally while live announcements or prerecorded messages deliver precise instructions. This ensures anyone within the coverage zone quickly understands both the nature of the alarm and the required action.
Robust Design for Any Environment
The WPS4000 Series is engineered for durability in even the most extreme conditions. Housed in a Type II two-compartment aluminum or stainless steel cabinet, the system is built to withstand environmental challenges such as harsh weather, high humidity, or temperature fluctuations.
Reliable Power and Maintenance
To ensure uninterrupted operation, the system runs on battery power, delivering a minimum of 30 minutes of full-output functionality with recommended batteries. A temperature-compensated 10-amp “tri-mode” battery charger and a SLIDEOUT™ tray provide simplified battery maintenance, further enhancing operational readiness.
Multiple Control Options
Adaptable to various operational needs, the WPS4000 Series supports multiple activation and control methods, including:
- Local Control: Push-button activation at the cabinet.
- Remote Access: Radio interfaces compatible with VHF/UHF narrow-band frequencies or landline DTMF activation.
- Two-Way Monitoring: Systems can report status updates such as battery health or activation confirmation.
- Solar Power: Optional solar configurations provide an eco-friendly alternative for remote or off-grid installations.
These flexible power and control solutions ensure reliable performance, whether used in urban environments or isolated locations.

Cutting-Edge Safety Features
Safety and reliability are integral to the WPS4000 Series, with multiple built-in features that enhance system performance and lifespan.
- SI TEST® Diagnostics: Regular operational readiness tests can be conducted silently, preventing unnecessary disturbances while ensuring functionality.
- Lightning Protection: Integrated lightning arrestors protect the system from unexpected surges, extending the equipment’s durability.
- Noise-Canceling Microphone: Enables clear live announcements in noisy or windy conditions.
- Optional Intrusion Alarm: Available for facilities prioritizing equipment security.
These features make the WPS4000 Series a trusted choice for critical communication systems.

Advanced Integration with RapidWarn
Seamless integration with the MCA RapidWarn platform elevates the WPS4000 Series further by offering centralized control and automation. This platform enables polygon-based geographical activations, weather-related integrations, and multi-modal communications. Through RapidWarn, operators gain a powerful tool to control alerts quickly and accurately, ensuring coordinated responses in emergency scenarios.
Customizable to Specific Requirements
No two deployment environments are exactly alike, and the WPS4000 Series recognizes that by offering robust customization options to address specific needs. Examples of available customizations include:
- Expanded Pre-Recorded Messages: Add custom or library-based messages to meet unique requirements.
- Solar Power Modules: Eco-friendly options for sustainable installations.
- Control Packages: Choose between one-way or two-way control options for added flexibility.
- Paging Interfaces: Integration with existing paging systems for broader communication capabilities.
These options allow organizations to tailor their system for maximum effectiveness while maintaining compliance with local safety mandates.
Proven Across Diverse Sectors
The WPS4000 Series has demonstrated success in a wide range of real-world applications. From protecting petrochemical facilities and refineries to municipal warning systems and military installations, these systems deliver trusted results. Their scalability and customizability make the WPS4000 Series an invaluable tool for any organization committed to public safety and operational reliability.
MCA—Your Trusted Partner in Public Safety
As a Premier Dealer for Whelen, MCA offers the highest level of sales and support, ensuring unmatched expertise across Whelen’s entire product line.
Backed by MCA’s expertise and service, the Whelen WPS4000 Series becomes more than just a mass notification system—it becomes a reliable, end-to-end solution tailored to your needs. MCA supports each deployment with consultation, system design, installation, and ongoing maintenance to ensure peak performance and maximum coverage.
When every second counts, the Whelen WPS4000 Series, paired with MCA’s RapidWarn platform, delivers the trusted solutions you need to ensure safety and preparedness.
Contact MCA today to explore how these advanced systems can enhance your emergency communication strategy, safeguard your community, and protect what matters most.
About MCA
MCA is one of the largest and most trusted technology integrators in the United States, offering world-class voice, data, and security solutions that enhance the quality, safety, and productivity of customers, operations, and lives.
More than 65,000 customers trust MCA to provide carefully researched solutions for a safe, secure, and more efficient workplace. As your trusted advisor, we reduce the time and effort needed to research, install, and maintain the right solutions to make your workplace better.
Our team of certified professionals across the United States delivers a full suite of reliable technologies with a service-first approach. The MCA advantage is our extensive service portfolio to support the solution lifecycle from start to finish.