In message , Timothy Murphy
writes
Malcolm Race wrote:

I decided that I would go for the Tropf
Blumat system recommended earlieras it does not rely on a timer but uses
a sensor to turn on the water at each point.

Do you really need a separate sensor at each watering point?
Can one sensor not deal with several drips?

Yes, each probe can feed more than one dripper - not sure how many, how
far, off hand.

However for hanging baskets you probably need one per basket. You might
well have more than one dripper in one basket though to to give even
watering.
--
Chris French