When I moved to my house the old owners left the alarm code on a small slip of paper I've lost. I rang the manufacturer who suggested I speak to the local crime prevention officer who'd point me to a local service engineer. No joy. Rang the manufacturer helpline which sent me a PDF file containing reset instructions, however these rely on my knowing the engineer code which may be default but I don't want to risk tampering with it, setting the alarm of and not being able to switch off the alarm.

Any ideas ? I live in Kent, UK.

Have a look in yellow pages and get a local firm to come and service it, the engineer will be able to set it up for you. Is there not a name of the installer on the panel or the bellbox?