detect wireless key

Can I detect somehow which wireless key the client try to connect to RouterBoard router ?
I wrote to my automation device X accidentaly wrong wireless key, and now I see the device trying to connect, but -
wireless
info
Message DC:4F:22:80:89:64@wlan1: disconnected, unicast key exchange timeout
And I can’t connect to my device X without it connect to wireless to change it to right one. And I can’t reset my device X as well to start over again.

My question is can I see somehow the key what the device try to connect to.

Thanks guys, I find solution to my problem. I removed WEP key from router after that device X connected to my router and then I already made changes.
M.