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Discussion Starter · #1 ·
Is there a visual difference? I have 17 PM1s and 1 PM2, and for the life of me cannot tell which is the PM2. I assumed that the PM2 wouldn't have the switching terminals, but all of them have a terminal A, B, C, D and E.

 

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I have lots of PM1s but no PM2s! The PM1 has a sprung brass washer on the actuating rod which slides along the PCB to provide the switch function. The PM2 probably doesn't.
 

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use PM2's here and as edwin says they dont have the sprung brass washer
 
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