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Home --> Fire Alarm Systems
  • General
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  • Specification
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.
Voltage Regulated 24VDC Operating Voltage 16–33VDC Maximum Alarm Current 30mA Temperature Range –10°C to 38°C (14°F to 100°F) Relative Humidity 95% non-condensing Wire Gauge 14 to 18AWG Dimensions 4.6ʺH × 2.75ʺW × 1.5ʺD