01-01-2016, 05:17 PM
It could be a 620B (AC operated)...
...or 623B (battery operated)...
...or 642B (32 volts DC).
Only looking in back will reveal its actual identity. Chances are it is a 620B. In my experience, those sets in order of most to least common are: 620B, 623B, 624B.
...or 623B (battery operated)...
...or 642B (32 volts DC).
Only looking in back will reveal its actual identity. Chances are it is a 620B. In my experience, those sets in order of most to least common are: 620B, 623B, 624B.
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Ron Ramirez
Ferdinand IN
