Artitech CS350 battery issue

[lulu lodge]

I have an Aritech CS350 control panel showing battery low.  can anyone advise how to replace this.  I have changed the key pad in the past so am capable if I have guidance, also where do I get a new battery and which one?

any advice greatly received before it dies completely.

many thanks

[al-yeti]

1 hour ago, lulu lodge said:

I have an Aritech CS350 control panel showing battery low.  can anyone advise how to replace this.  I have changed the key pad in the past so am capable if I have guidance, also where do I get a new battery and which one?

any advice greatly received before it dies completely.

many thanks

You have engineers code? Open main panel avoid touching any mains voltage and see what battery is inside