The 4098-9686 Four-Wire Duct Detector and 4098-9756 Four-Wire Duct Sensor have a yellow LED that indicates an short or open condition on the supervised control zone (yellow LED "ON" steady), a trouble is also reported to the panel during a short or open condition.. The Simplex 4098-9685 is a Two-Wire Duct Detector supplied with the 4098-9601 Photoelectric Detector. These devices are designed to sample airflow in air ducts to detect unacceptable levels of smoke. They are intended for use in the control of air handling equipment, specifically for closing dampers or shutting down air handling units. For more information, see pages 3 and 7 of the manual.
View and Download Simplex 4098-9687 installation instructions manual online. Stand Alone Duct Detector. 4098-9687 security sensors pdf manual download.. A Simplex duct detector 4098 is a device used to detect smoke or fire in an air duct system. It is crucial for ensuring the safety of a building and its occupants. The wiring diagram for a Simplex duct detector 4098 is an essential tool for understanding how to properly install and connect the detector. The wiring diagram provides a visual representation of the electrical connections required.