A small module that reacts to sound. The sensor is 9.7x7 mm and has a length of 15 mm. The mod converts sound into an electrical signal
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. Each Size : 9.7 x 7 mm (D*H) Total Length : 15mm/0.59"