Hi I need your help.
I have DSC PC3000RK, I don't know how to change the 4digits code.
I have current 4 digits code. Everyday I use this # for arm & disarm.
But I'm not sure this 4 digits cude is master code or not. And I don't have a manual book.
How can I change to new 4 digits code & How can I delete the current
4 digits code?
HELP ME PLZ