Type ECM-10B is an ultra-miniature omni-directional electret condenser microphone only 6mm diameter and 5 2mm thick. Specifications:

Response: Omni-directional Frequency response: 50Hz to 13kHz Sensitivity: 60dB ±3dB 0dB = 1V/µbar at 1kHz, Vcc = 45V, Rl = 1kΩ Impedance: 1kΩ maximum S/N ratio: >40dB Sound pressure level: 120dB maximum Power supply: 15V to 10Vdc Recommended voltage: 45V optimum performance Current drain:

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