System Sensor 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 90A.
System Sensor APA151 Piezo Annunciator
APA151 Expand the Versatility of the InnovairFlex™ line of Duct Smoke Detectors with System Sensor Notification and Test Accessories.MX
| Brand |
System Sensor |
|---|---|
| COO |
MX |
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