Pulled this from Facebook…
Nokta “The Legend” Users Forum
Paul Wetherhill
So, not sure how many are aware of this, but I used to make headphone adaptor cables for Makro in another life.
You can make your own if you don’t want to pay £27
You need:
1-x-8-pin male
M12 cable
3.5mm stereo female headphones adaptor (or larger for the bigger plug).
Cut all the wires off the M12 cable except red, white, and blue.
Red to both left and right terminals on the headphones adaptor.
Twist blue and white together, they’re your Earth and speaker cut off, to the Earth on the headphones adaptor.
Works a treat. your Detector detects the plug when it’s inserted and cuts the speaker.
udigidig.com 
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