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Hi people,
I've been googling & searching all day for
anything on how to put a low level alarm
on my Oxycheq "El Cheapo II" O2
analyzer.
It has a digital panel meter but I'm not sure
whether it's PM128, PM188, PM129A or PM129B.
A year or two back I read how to do this but can't
seem to find this source.
Has anybody done this or can point me to the info
thanks.
Regards Alan
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