Top positive review
One person found this helpful
A timer, not a flow meter.
on 31 May 2017
I wanted a simple timer with display, but this was the closest I could find.
The process to measure water flow by filling a bag to the line is inaccurate, messy, and unnecessary. Even if you manage to time your shower accurately delivering a litre, the flow rate will likely change. An electric shower run at a constant temperature will have a higher flow rate in summer, as the incoming water supply warms up, and a simple mixer valve may vary considerably according to the state of the hot water tank.
I simply ran the timer for a minute to "calibrate" the flow as 1 l/min, then set the limit to the number of minutes I wanted. Now it is a simple timer, just as I wanted. Easy to use. Sticks to the tiles well, not falling as the button is pressed, and has a cord to save it if it is dislodged. No sign of water damage after a few weeks.
My only complaint in operation is that the alarm sounds again much later (after 99', I think), if we forget to press the button when we finish.
My son and I are learning to limit our profligate cleaning rituals. Job done.