I had trouble finding this at my local garden centres and found this item here. It is much cheaper and does the job. When the end of its life comes about I'll do another review. I bought two but really expect this to last at least a year as my waterfall is on 24/7 all through the year including winter time.
I've now got two different phones from this supplier and they work perfectly. They look good and this one sits on my antique desk in my study and is greatly admired. The weighting is good and does not feel and look cheap and nasty like some others. I am getting more to go round the house. Good-bye to the new dtec phones that were alwasy going wrong. These are in my opinion much more reliable and good looking. Full marks!