System Sensor 4W-B Photoelectric i3 Series Smoke Detector, 4-Wire, White

Designed for dependable early warning in commercial environments, the System Sensor i3 4W-B photoelectric smoke detector gives building managers and security professionals reliable detection with easy installation and maintenance. This 4-wire, ceiling-mount smoke detector uses a photoelectric sensor optimized for smoldering fires and includes drift compensation and smoothing algorithms to minimize false alarms and reduce service calls. Compatible with 12V or 24V DC fire panels and UL 268 listed, the 4W-B fits standard octagonal, single-gang and 4-square back boxes, reducing retrofit complexity.

Technicians benefit from the plug-in base, LargeWire entry port, SEMS screws and Stop-Drop ’N Lock attachment that speed wiring and inspections. Wide-angle dual-color LEDs and built-in remote maintenance signaling provide instant status for security teams, helping maintain uninterrupted monitoring and integration with surveillance and fire alarm systems. Ideal for offices, schools, retail and industrial sites, the System Sensor 4W-B balances performance, compliance and low total cost of ownership. Contact us to specify this detector for your next fire alarm or security monitoring project.

• Simplifies installation with a plug-in 4-wire base and wide wire entry to reduce labor and installation time
• Photoelectric sensing with drift compensation delivers reliable early detection and fewer nuisance alarms
• Built-in remote maintenance signaling and removable chamber streamline testing and ongoing upkeep
• Dual-color wide-angle LED and clear status indicators enable fast visual verification for security and maintenance teams
• UL 268 listed ceiling-mount design integrates seamlessly with commercial fire alarm panels and security monitoring systems