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4Pcs Long 3.5mm Jack 4 Pole 3.5 Male 90 Right Angle Stereo Headphone Plug DIY Repair Earphone Audio Soldering Connector 17mm - AliExpress Lights & Lighting
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Ck-6.35-644 6.35mm Phone Jack 6 Pins Audio Female Jack 6.35 Headphone Jack - Buy 6.35 Headphone Jack 6 Pins,6.35mm Phone Jack,Audio Female Jack Product on Alibaba.com
Welcome to this Second part of how to build a simple Cell phone to Cell phone Remote Control from 1 to 8 Relay Channels
![Headphones compatible with phone only after switching the audio cable polarity - Android Enthusiasts Stack Exchange Headphones compatible with phone only after switching the audio cable polarity - Android Enthusiasts Stack Exchange](https://i.stack.imgur.com/Wefem.jpg)