DRUMMER CAFE

Just received a Lug lock tempo ref which is great for finding tempo. Would be a good tool for anyone with speed up/ slow down syndrome. It works as a speedometer displaying the tempo you are playing at as opposed to a normal metronome which gives you the constant click to try and keep to. I found my time in the ball park anyway but this is going to be a useful tool for developing feel. It has other features which i have yet to suss out yet. Anyone else driven one of these? How do you get on with sentivity?. Placed on the drum it responds well if drum is played medium to hard but not a low volume. Instructions were not that clear.