specification (all data taken at 25c unless otherwise specified) value applying rated voltage, rated frequency, 50% duty square wave h electro-magnetic sound generators hcm09a series www.jlworld.com jl world rated voltage (v) 1.5 35 operating voltage (v) 1 ~ 22 ~ 5 4 ~ 7 h rated current (ma) 70 7070 coil resistance ( ) 5.5 1 25 440 4 w h sound output at 10cm (db) 80 33 3 8285 rated frequency (hz) 27312731 2731 operating temperature (c) -20 ~ +60-20 ~ +60 -20 ~ +60 storage temperature (c) -30 ~ +70-30 ~ +70 -30 ~ +70 housing material noryl se1-gfn2 weight (g) 11 1 modelHCM0901A hcm0903a hcm0905a 5.5 3.0 0.5 ?9.0 0.5 4.0 ?0.7 masking label dimension unit : mm tolerance : 0.3mm frequency response applied voltage : 1.5v, 50% duty square wave measuring distance : 10cm 60 70 80 90 500 1k 2k 3k 5k 10k hz db
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