Don't know about the D4 but the hose for the C and K models has a sliding speed control so pretty much infinite possible settings between the high and low limits.How many suction settings are there?
I’ll have to count them next time, but I believe there are about 6-7 speeds.I have never seen an E or a D in person so I was wondering about the D range as it has 'clicks'.
I have never seen an E or a D in person so I was wondering about the D range as it has 'clicks'.
I just counted 9 total on mine, where the 9th turns off suction altogether (idle mode or whatever they call it)I’ll have to count them next time, but I believe there are about 6-7 speeds.