System Sensor provides system flexibility with a variety of
accessories, including three remote test devices and several
different means of visible and audible system annunciation.
Like System Sensor’s duct detectors, all duct smoke detector
accessories are UL listed.
The APA451 provides a red alarm LED, with an audible
annunciation of an alarm signal, and a green power LED. It is
intended for use in System Sensor 4-wire conventional duct smoke
detector applications without a system control panel, to comply
ith NFPA 90A.
Maximum Alarm Current
–10°C to 38°C (14°F to 100°F)
14 to 18AWG
4.6ʺH × 2.75ʺW × 1.5ʺD