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Model: QSMB-2910- Color: Black- Material: ABS + Copper- Specification: Max. voltage: 30V; Rate voltage: 12V; Max current rating: 3.5mA; Min. sound pressure level: 85dB; Frequency: 2800+/-500Hz- Features: Can be used in communication£¬ household appliances£¬ toys£¬ etc.- Package includes:- 1 x Piezo buzzer (15cm-cable)