TRRS Audio Jack Module (3.5mm)

CJMCU-TRRS 3.5mm Audio MP3 Stereo Headphones Video Microphone Interface Module comes with the audio-style connectors that you see on phones. It is widely used in MP3 players and development boards.

TRRS stands for Tip, Ring, Ring, Sleeve, which reflects the fact that, unlike a standard stereo connector. This actually has three conductors and a ground. Some devices use the extra conductor for a microphone (like hands-free headsets) or to carry a video signal (like in some MP3/MP4 players).

This breakout board makes it easy to add a TRRS jack to your prototype or project by breaking out each conductor to a standard 0.1 spaced header.