Key for Handle Set

A quick learner from Pearblossom, Ca says:
I need a key for my 82-240 Roto multi-point mortise latch lever
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Bob from SWISCO responded:

Thanks for posting. Do you have a handle set with 4-15/16" hole spacing, or the distance between the center of each mounting hole? If so, you might have a handle set like our 82-081. You can replace the key lock cylinder in this type of handle set with our 82-310. Let me know what you think. 

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