Thanks, George: I will probably give the homemade thing a shot and if it doesn't work out..............I have a bag of the epoxy I used to use to seal under water electrical equipment. I will find it's spec sheet to get the temperature limits and put something over it to separate it from contact with the water and therefore the shower screen etc. I've got lots of time (retired). Data logger from Omega (HH806AU) on it's way.
KDM



