| type | unit | zhd-12a01 | zhd-12a03 | zhd-12a05 | zhd-12a12 | | rated voltage | v | 1.5 | 3 | 5 | 12 | | operating voltage | v | 1.2-3 | 2-5 | 4-7 | 8-16 | | *rated current(max) | ma | 20 | 30 | 30 | 30 | | *min sound output at 10 cm | db | 80 | 85 | 85 | 85 | | *resonant frequency | hz | 2300±300 | | operating temperature | ℃ | -20～+70 | | storage temperature | ℃ | -30～+85 | | housing material | | noryl | | weight | g | 2 |
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