APA151 | System Sensor | REMOTE ANNUNCIATOR WITH PIEZO ALARM

Expand the versatility of the InnovairFlex line of duct smoke detectors with System Sensor notification and test accessories. APA151 piezo annunciators, which replace the APA451 with a new, improved look, provide an audible alarm signal, a red LED to indicate alarm status, and a green LED to indicate power status. They are intended for use with System Sensor 4-wire conventional duct smoke detector applications without a system control panel, to comply with NFPA 90 A.