Edwards Signaling SD-SJ SD Series SuperDuct 4-Wire Smoke Sensor with RJ45 Connector, 24-230VDC/VAC Operating Voltage

Improve duct-level fire detection and building security with the Edwards Signaling SD-SJ SuperDuct 4-Wire Smoke Sensor. Engineered as a compact detector accessory, this low-profile smoke sensor (<2" deep) installs easily into confined ductwork or plenum spaces to provide dependable early warning where airflow monitoring is critical. The SD-SJ pairs a PCB-mounted photoelectric sensor with patented differential environmental compensation, reducing nuisance alarms from dust and humidity while maintaining sensitivity to true smoke events. An RJ45 connector streamlines wiring and integration, and the broad 24–230VDC/VAC operating range supports a wide variety of fire alarm control panels and HVAC monitoring systems. Ideal for facility managers, integrators, and security professionals, the SD-SJ delivers consistent performance for duct smoke detection, surveillance-linked monitoring, and life-safety applications. Specify the Edwards Signaling SuperDuct SD-SJ to enhance your fire detection strategy—contact your distributor or add to your next security or HVAC project today.

• Low-profile design (<2" deep) for easy installation in tight duct and ceiling spaces
• PCB-mounted photoelectric sensing with patented differential compensation for reliable, false-alarm resistant detection
• RJ45 connector simplifies wiring and speeds system integration for faster commissioning
• Wide operating voltage (24–230VDC/VAC) ensures compatibility with diverse fire and building systems
• Optimized for duct smoke detection and security monitoring within HVAC and surveillance-integrated environments