Roto skylight operator

A home owner from USA says:
We just moved into a house that has a Roto skylight with an inoperable opening mechanism. I have attached a picture of what it looks like right now. The only information that we have about it is what it says on the apparatus "Roto" and then "Truth 45013." On the brass-colored spoked wheel it has the numbers 30654. Do you have a cover and handle for this that would make it able to be cranked open?
User submitted a photo of a skylight operator.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting. Look at our 39-379 and see if this can possibly be used as a replacement for your crank operator.
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