10 PCS 4mm x 1.5mm 2 Leads MIC Capsule Electret Condenser Microphone
Electret condenser microphone, back electret type, small in size, in general use.
An acoustic-to-electric transducer or a sensor that converts sound into an electrical signal.
Widely applied to telephone, mobile phone, MP3, MP4, laptop, digital camera, intercom, monitor, etc.