reset/reinstalling door/window sensors with DC821

[keshav]

I have a DC821 base console that I got recently. I need to reinstall all of my door/windows sensors with the new DC821. As I turn on the console and put into to INSTALL mode, all the Zone lights stay glow, giving the appearance that the sensors are already installed. I know none of them are as I have removed the batteries of all my sensors to start everything fresh.
I know there's a key-combination on the console that resets everything but I can't remember or find it on the internet. Can someone send a note if you remember it? Thanks in advance!

[keshav]

found it!
(PANIC + ARM AWAY + ARM HOME) all pressed together resets everything!