Powering off networx alarm security command panel?

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How do you power it off? There is no power button. I accidentally set
it on and can't get it to disarm, so when i open my door of house, it
goes off for like 10 minutes and i can't get it to stop on my own. The
alarm goes off, but the red armed light is blinking. I'm afraid to open
my door since it will go off again. I tried to go to the alarm speaker
to shut it off but can't pull the cover off the wall. It is tough. I
don't see a power button to shut off the Networx command panel. I don't
know why this is happening since i don't actually have service for this
security system. So how do i just power it off completely? Thanks a
bunch.