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Supply 12085 passive buzzer long needle short needle with pin smoke alarm buzzer

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[Factory Direct Supply] 6027 Single-Finger Microphone Head-Mounted Microphone Noise Reduction, Anti-Interference, Low Power Consumption, Low Noise Microphone

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Factory direct supply Huaneng 09 ultra-small series 12V industrial electromagnetic active integrated buzzer HNB09A1

Golden Ear Factory Directly Supply Round 10mm Good Sound Quality 32 Euro Bluetooth Headset Sleep Headset Speaker