100 ohm , 0.15 watt speaker from pololu

Audio Piezo Buzzer 3 - 28V

This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use the Maxim MAX4466, an op...

It can also be used to record audio in both PCM (WAV) and compressed Ogg Vorbis. You can do all sorts of stuff with the audio as well such as adjus...

Electromagnetic Buzzer: 9mm, 40Ω, 4-6V, Top Opening

That's one tiny microphone! At about the size of a mature aphid, this wired Electret Microphone is perfect for your FONA.This microphone's very sim...