System Sensor 4W-B Fire Alarm Smoke Detector

The System Sensor 4W-B smoke detector delivers reliable fire detection with advanced photoelectric sensing technology, designed to ensure quick response times in a variety of environments. It is engineered for easy installation and seamless integration with existing fire alarm systems.

• Compact 4-inch diameter fits discreetly in most ceiling applications while providing wide area coverage
• Low power consumption of 25 mA supports efficient operation and extends system battery life
• Operating voltage range of 15–32 VDC ensures compatibility with most standard fire alarm control panels
• Built-in LED indicator for clear visual status and fault alerts at a glance
• UL listed sensitivity range of 2.5% to 3.5% obscuration per foot optimizes detection accuracy while minimizing false alarms

Compared to previous models and industry norms, the 4W-B stands out with its enhanced photoelectric sensor that improves early smoke detection in slow-smoldering fires. Its streamlined design reduces installation complexity and maintenance needs, making it a preferred choice for commercial and residential safety systems alike.

Enhanced Detection and Reliable Performance

Utilizing cutting-edge photoelectric sensing technology, this smoke detector quickly identifies smoke particles, enabling faster alarm activation which is critical in emergency situations. The unit’s low power draw and broad voltage compatibility make it highly adaptable for diverse fire alarm setups without compromising energy efficiency.

Its integrated LED indicator offers straightforward troubleshooting and status monitoring, simplifying maintenance routines. The detector meets stringent UL sensitivity standards, striking a balance between prompt warning and false alarm prevention, which enhances overall system reliability and occupant safety.

Durability and ease of use are built into every aspect of the 4W-B’s design, supporting long-term performance in demanding environments. This model represents a meaningful upgrade over older detectors by improving both detection capabilities and user experience, aligning with modern fire safety requirements.