| type | unit | hyd-4218 | | rated voltage(square wave) | v | 12 | | operating voltage | v | 3-15 | | *rated current(max) | ma | 9 | | *min sound output at 10 cm | db | 90 | | *resonant frequency | hz | 2900±500 | | operating temperature | ℃ | -20～+60 | | storage temperature | ℃ | -30～+70 | | housing material | | abs | | weight | g | 15 |
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