华宇电子蜂鸣器HYD4218压电音乐声，报警声。3-24V
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HYD-4218 |
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| FREQUENCY RESPONSE 
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| SPECIFICATIONS |
| 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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