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AUDIO INDICATOR, 4.1kHz, 73dB, 20V; Transducer Function: Audio Indicator; Supply
Descriptions of Mallory Sonalert AST1109MLQ provided by its distributors.
SMT TRANSDUCER; 1-20 VPP; 75 DB; 4.1 KHZ; 11X9X1.7 MM; BULK/CUT TAPE
New Yorker Electronics