specification (all data taken at 25c unless otherwise specified) value applying rated voltage, rated frequency, 50% duty square wave h electro-magnetic sound generators www.jlworld.com jl world rated voltage (v) 3 operating voltage (v) 2 ~ 5 h rated current (ma) 110 coil resistance ( ) 16 2.4 w h sound output at 10cm (db) 3 86 rated frequency (hz) 2731 operating temperature (c) -40 ~ +85 storage temperature (c) -40 ~ +85 modelHCS0903U dimension unit : mm tolerance : 0.3mm frequency response applied voltage : 3v, 50% duty square wave measuring distance : 10cm hcs09u series 1.5 1.5 9.1 1.6 0.15 3.0 8.5 (-) dummy dummy (+) 8.5 + HCS0903U xxx jl 60 70 80 90 500 1k 2k 3k 5k 10k hz db
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