How accurate are data from our treadmill – a taboo topic?

The MRIS owns two Newgen medicals treadmills: https://www.galaxus.ch/de/s3/product/newgen-medicals-laufband-laufband-16208635?utm_source=google&utm_medium=cpc&campaignid=20448036879&adgroupid=&adid=&dgCidg=CjwKCAiAxreqBhAxEiwAfGfndIBU2E2dGOP94Ze5Zu8ZU7BIaATOS5o92AwVuGMJQLcLn9Fut0bCIRoCO94QAvD_BwE&gad_source=1&gclid=CjwKCAiAxreqBhAxEiwAfGfndIBU2E2dGOP94Ze5Zu8ZU7BIaATOS5o92AwVuGMJQLcLn9Fut0bCIRoCO94QAvD_BwE&gclsrc=aw.ds which we bought used on Ricardo Switzerland. This treadmill is light weight, does not need a lot of space, an runs quietly. The speed can be ajusted in a range which is sufficient for walking meditation. But the board computer stops after 30 min. and we have …