I am constantly being asked three questions about E-Stops which I cannot
find the answers to.

1. "Mushroom Shape" is specifically called out in some standards but the
newer style e-stop switches are becoming less and less Mushroom Shaped.  If
this a concern?

2. "Yellow Background" is getting smaller and smaller. Some small e-stop
switches has no yellow background but has a small area on the shaft of the
switch that is yellow. This is not technically the "background".  Is this
acceptable or is a yellow background required in addition?  The size of the
yellow area is not specified as far as I have found.

3. English text "Emergency Stop" printed on the button or on the yellow
background ring:  Is this a problem in non-english speaking countries?  Do
I have to translate (like in French for France and Canada) or are these
words "globally acceptable"?  I have been telling our engineers to choose
e-stop switches and yellow rings without text but some manufacturers only
provide it with the text.

Thanks to all.

The Other Brian

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