I was excited to find these, but very disappointed to find that the timer feature does not work on these. I ordered two (2) to replace two Bernini fountain pumps. I was able to turn on the fountains, however, the (B) button (which should blink green to indicate number of hours to run) to set the timer function does not work at all on either pump. So the pumps just run until I manually turn on or off. Unfortunately, I had discarded all packing/shipping materials to try and return.