The New Notifier NFX-OPT-IV Smoke Detector is a direct replacement for the Notifier SDX-751EM detector. The new detector is backwards compatible with existing Notifier Systems and the Ivory Colour means that it will match the colour of existing Notifier detectors.
Full lengthy integration of the all-new electronical components, through the surface mounted PCB assembly, along with extensive testing through the production process, highly accurate circuit board cutting along with completely newly designed plastics offers greater quality and durability than ever before.