YF-ES2140 Product Introduction: Microphone 1. Size: 6*5mm 2. Frequency range: 20Hz-16 KHz 3. Sensitivity: 58﹢/﹣2dB 4. Standard voltage: 1.5V Speaker 1. Size: Φ10mm 2. Frequency: 20-20000Hz 3. Output sensitivity: 119db?db 4. I
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