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Can you have a diffrent key other than the original 455 Key for the harmony key switches?

Yes, for an example you can order a 458 key and add the suffix 10
See table:
Key Number Suffix to be added
458A 10
421E 12
520E 14
3131A 20

For further information please see https://www.schneider-electric.com.au/en/all-products

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