IanR

Hi, I have a Eurosec CPX alarm system. I also have the engineer and user codes. I need to change the battery as it's probably eight years old. Please could someone give me a step by step guide as to how I disable the system so I can open the control unit without setting off the alarm. I am happy with the physical change of the battery. I have the 'User Instructions' but it does not cover battery replacement. I guess I would need a maintenance manual. I have also noticed that when I have a power cut the alarm goes off. Is this correct and if so how do I disable that function. It happened a couple of weeks ago when I was abroad on holiday, much to the inconvenience of my neighbours ! Thanks in advance. Ian