Introducing DUCTSD: a New Duct Smoke Detector by System Sensor

ductsd-duct-smoke-detector-system-sensorMeet the new DUCTSD – a duct smoke detector that simplifies testing with a cover-integrated smoke test port.

DUCTSD’s cover-integrated smoke test port enables contractors to test the detector’s operation using any approved aerosol test smoke without the need of special tools or attachments. You simply hold down the reset button for a few seconds to activate the test mode. Once the LEDs start flashing red and green, you remove the bottom of the tethered plug and spray a short burst of smoke into the chamber.  When the detector goes into alarm, you may then replace the plug. The detector will automatically return to standby mode after a few moments.

The streamlined DUCTSD uses a plug-in photoelectric smoke sensor with operating conditions ranging from -4 to 158 degrees Fahrenheit, and air speeds from 100 to 4,000 feet per minute, also without any additional attachments.

You may have noticed that the DUCTSD housing looks similar to other System Sensor duct smoke detectors: that’s because the footprint and the location of the sampling tubes is the same, allowing for seamless retrofit applications with other System Sensor duct smoke detectors. The housing continues to offer mounting flexibility for both square and rectangular configurations.

The other obvious change in the DUCTSD is the black power board cover. On the inside of that cover is a wiring diagram to help make wiring more straightforward, as well as a QR code that links directly to the installation manual on the System Sensor website. This feature helps the electrician or installer finish wiring the unit to the fire alarm system, dampers, or fans.

For controlling those auxiliary devices, DUCTSD has two form C relays and one alarm relay. This new offering is a simplified device that monitors only one connected sensor. If you have an application that requires you to monitor both the intake and return sides, then consider using a System Sensor D4120 duct smoke detector. Its 2:1 sensor capability can save you money on the installation and ongoing maintenance.

You can learn more about DUCTSD duct smoke detectors on System Sensor’s website.




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