Freqently asked questions
Q1:We can't turn on the oximeter,even the batteries are new.
Answered:The positive and negative poles of the battery are marked at the location where the battery is installed.The two springs are on the same side, the two batteries are still need to be installed in opposite directions.If this does not work,please kindly contact the manufacturer directly.We are the direct manufacturer,CONTEC.We can offer a satisfied solution.We can re send or refund.
Q2:For any condition,please just contact the seller directly through amazon.You'll get a satisfied solution in any time.