My husband has negotiated a deal for $350 for a lightly used res med S9 autoset machine. Before completing this transaction he would like to know if there is a way to find out when the machine was manufactured and also anyway to clearly tell how many hours the machine was used. He also was wondering if it is an S9 that is two years old, is there anyway to update the algorithm/firmware/software so that it works effectively as a new one?
By the way, the guy selling the machine found out he had narcolepsy, not sleep apnea and that is why he is selling it. We do not have insurance and can not afford to buy a new one, that is why he is purchasing a used one.
Any info, good or bad will be greatly appreciated!