I jumped the gun and purchased a new ResMed AirSense 11 Elite and when my test results came back it turns out I have something different, and worse.
Since Facebook will not take advertising for these products I offer it here to a member who may want to upgrade and buy a new one. Purchased 8/1/26 it comes complete with carry case and includes 240v and 12/24v DC-DC converter cable, plugs in to cigarette lighter, draws between .05 and 1.5ah. Also comes with F20 large soft touch mask.