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Siemens AIC
Audio Input Card, Use to Input External Audio Signals into System, One Card Slot
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Siemens AS-HMC-CR-WP
AS Horn / Strobe: Hi Multi-Candela Ceiling Weatherproof, Red
Audio Input Card, Use to Input External Audio Signals into System, One Card Slot
AS Horn / Strobe: Hi Multi-Candela Ceiling Weatherproof, Red