Headsets, Headphones, Handsfree - pinouts of mobile phones and other equipment
MRLG pinout

Warning! Control buttons are NOT standard. For information about control buttons take a look to another pinout

 

Pin Pin
Name
Description
1 MIC Mic +
2 R_SPKR Right audio speaker
3 L_SPKR Left audio speaker
4 GND Common ground

 

Compatibility list not tested!

4 pin 3.5mm (2.5mm) plug connector layout
4 pin 3.5mm (2.5mm) plug connector
at the 2.5 mm plug
According to 2 reports in our database (0 positive and 1 negative) this pinout may be incorrect.

Is this pinout
MRLG 4-pole 2.5mm headset connector visual pinout:
MRLG 4-pole 2.5mm headset connector diagram
click to enlarge
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