radio shack 49-1000

[mdn]

Hey,
Thanks for everybody's advices.

I just bought a radio shack 49-1000
wireless security system.

But when entering the default code 0-0-0-0,
I get ERROR.  I can't get to INSTALL or
MENU if it doesn't recognize the default
code.

Has anyone found out to reset the code back
to default?

Thanks.
mdn