Abacus D.C, polarity

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virtu

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Dec 29, 2008
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Hi mates.
What is the polarity of abacus foot controller d.c. in? negative or positive?
i know that the power requirement is 12v but i don't know the polarity
also how many mA it needs? it's ok if the voltage supply has 500mA?
A manual or something? i couldn't find it on net.
Thanks
 
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