Just curious if anyone knows what the center pin is for on the molex connector on the R22D oxygen cell? Is it actually wired into the cell's circuit board?
One would assume it would be for something... but it appears all the PPO2 meters only use the outer two pins. I guess it could be just to hold the connector more securely or to utilze a well known connector (molex) but all the O2 cell manufacturers seem to put the center pin in...
Thanks,
Ryan