The Clack WS-1 doesn't have any flashing lights and for most people (they read and follow directions...), it takes less than a minute to program a Clack WS-1.
The display shows, in everyday English, what is in the field in the database and you use the Up and Down arrow buttons to increase or decrease or change it, then you push the button labeled Next to go to the next field.
There are like a total of 11 fields and I'm sure you could handle that Pete because I know a set of 72 yo spinster female twins in FL that did it. Actually it's as easy as heating a cup of coffee in a microwave.
Below is what it looks like. The data shown is the factory default. My customer changes that data to the their specific data that I give them. It takes less than 60 seconds to do it.
Have you looked at what it takes to program a Fleck? Especially a mechanical metered Fleck?
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