[Elecraft] KX3 Turns Itself On

[N4CW at aol.com]

...all by itself! I recently installed the KXBC3 feature, and after  
installation, I put the NiMH batteries back in
and set the charge time to 4 Hrs...they were pretty well charged anyway.  
And I left it plugged into my
common power supply (handles the K3 also!). A day or so later, I came into  
the shack to find the KX3 on...
I thought I'd forgotten to shut it off. Just in case, I checked to see if  
the Alarm was set on in the KX3. It
wasn't. Darn if the KX3 didn't turn itself on tonight too!
 
So what did I miss? I think I read all the instructions...more than  once.
 
Bert, N4CW