Greetings Sandra. Thanks for coming to Tundra Restaurant Supply with your question.
The Kason 10481A00600 Inside Release Handle does not appear to have a lock of any kind on it. That said, I can't be sure if you're asking about the inside release handle itself or the external latch and whether it has a lock for your piece of equipment. The inside release handle is simply a glow in the dark plastic push button that, when pushed, lets you out from the inside. I don't believe it locks from the inside at all.
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Answered on 1/25/2013 by Andrew Call from Boulder, CO