Originally Posted by jwalker
Can I go back to the beginning?...is the reason for your plan to remind you to switch the pump off cos you switch it on and forget it or is it to prevent you having to monitor the well to see whether it's empty? And, is the timer connected to the pump or just to the buzzer?
Correct, on the first two points,the buzzer is to remind me it's on, the well only holds so much water, so based on a timed emptying of this well by the bilge pump, it would be time to switch the pump off.
Re the third point,my plan was to connect the timer to the piezo buzzer.