This brand new smoke detector fire alarm is your go-to solution for ensuring fire safety in your facility. With a 4 wire sensor housing and air duct compatibility, this Simplex model 4098-9756 is designed to provide reliable fire detection without compromising on style or design. Perfect for businesses and industrial settings, this fire alarm is easy to install and use. Don't take chances with your facility's safety - invest in this top-quality fire alarm today.