System Sensor SpectrAlert Advance Clear Dual Strobe with Speaker Expander Plates
The SpectrAlertAdvance clear dual strobe with speaker expander plates by System Sensor of St. Charles, Ill., combine the functions of two to three notification devices on a single mounting plate and back box.
The plates include a UL 1971-listed (signaling devices for the hearing impaired) clear lens strobe for public mode signaling. The strobes are also compatible with colored lenses for UL 1638 private mode general utility signaling.
The product can be used in 12V or 24V systems and can be paired with a fire-rated SpectrAlert Advance strobe or speaker strobe.
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