Secutron MRI-2351RAP Photoelectric Smoke SensorThe MRI 2351RAP photoelectric detector is a remote test capable for use with a duct smoke detector. The Select Series low profile smoke detectors are intelligent addressable plug in detectors with point ID capability that enables each detector address to be set with rotary address switches providing exact device locations. Detector sensitivity is continually monitored and reported to the fire alarm control panel. These intelligent sensors utilize a