System Sensor 2W-B White 2-Wire Photoelectric i3 Series Smoke Detector is a plug-in fire alarm detection device designed for reliable smoke sensing and simplified installation in residential and commercial applications. Part of the i3 Series, it features intelligent signal processing, drift compensation, and fast installation to improve accuracy and reduce maintenance.

• Photoelectric sensing technology with i3 intelligence improves smoke detection accuracy while reducing nuisance alarms
• Plug-in detector with included mounting base allows pre-wiring and fast “Stop-Drop ’N Lock” installation
• Drift compensation and smoothing algorithms maintain long-term sensor stability and reduce false alarms
• Wide-angle dual-color LED indicators provide clear visual status for normal, alarm, and maintenance conditions
• Compatible with 2-wire fire alarm systems and supports loop testing and remote maintenance signaling when used with i3 modules