Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
Are you willing to terminate this situation, undoubtedly annoying and/or worrying, by disabling the alarm permanently and somewhat destructively? there may be no other method to use in this case... provided you cannot obtain the proper code, user code, or engineer code, from anyone.
Do you have a key to open the alarm system box with?
Do you, or did you ever, have a code for the alarm system?
No code for the alarm system?
Have you tried entering the default engineer code for the RP8 system?
How did you acquire this alarm system?
How long have you had a problem with this alarm system, please?
And does it show 'BATT' on the screen anywhere? or 'LO BAT' ?
Is the STATUS light On, or Off, please?
Well, that's one way to deal with it.
There may be a way to default it back to default settings, too.
But all's well that ends well.
If you are done with this case, please rate my answer and my work on this case. Thanks.