The Simplex 4098-9756 is a 4-wire duct sensor that comes with the 4098-9714 Photo Smoke Sensor It is a compact air duct smoke sensor housing that detects smoke in air conditioning or ventilating ducts. With its reliable features and versatile mounting options, the Simplex 4098-9756 is an excellent choice for use in various commercial and industrial applications. Specifications: Duct sensor housing with supervised output for multiple remote relays. Requires separate 24 VDC power supply. Includes one relay, with output under panel control. It can be activated manually or in response to a separate alarm or other input. UL listed to Standard 268A. Clear cover allows visual inspection. Test ports provide functional smoke testing access with a cover in place. Mounts to rectangular ducts or round ducts, with a minimum size of 8” (203 mm) square or 18” (457 mm) diameter. Magnetic test feature for alarm initiation at housing. Optional weatherproof enclosure available separately (refer to data sheet S4098-0032). This item is the replacement for Simplex 4098-9706.
