eMini-Wright Digital Peak Flow Meter Standard Version

I have COPDWorks great for me.

Seems adequate, though not entirely convinced of its accuracy. Unit supplied with batteries that were almost flat, needed to spend £5 to replace them in order to make the appliance function, not the best start.

Very good but had to put new batteries in it

found ut very difficult to understand the instructions ,especially as I am an eighty year old,needs to be made clearer ,

does the job

Peak flow

I cannot get it to work?I am so disappointed with it as it looked good?

Tried everything doesn’t work