Alarm keypad - a few pointer on how this works please - Project Guidance - Arduino Forum
Private Army Security Systems Ltd - The Faulty Intruder Alarm System and Keypad has been replaced to new Honeywell Accenta G4 and LCD Keypad + Informa Speech Dialer has been added to
Accenta G4 house alarm, disable bell : r/DIYUK
How to reset Accenta G4 alarm after activation - YouTube
ADE 8SP400A Accenta Mini Gen4 Alarm Panel c/w LED Keypad : Amazon.co.uk: Everything Else