One temperature input that will be sent to the array when any one of three digital
inputs changes state.
So if I had an array that accomodated 15 - 18 cells that would give me the readings
for a day as typically the boiler cycles about 4 - 5 times a day when it gets below 50 dgf.
And if I did a tim eo f sday or elaped time reset of the values, say at midnight, that would be
ok. I do not need to record these for a permanent log/record.