FastCar

Bell box tamper.

Knights Plastics do them.

Yes you can.

You could use the Easyset unit added to your alarm , not really wireless , but the fobs make for easy set / unset. http://www.securitywarehouse.co.uk/catalog/index.php?main_page=product_info&cPath=36_102_106&products_id=1130

Have a look at the Texecom Premier range , 24 or 48, the installation manuals are very concise.The Accenta is only good for 8 zones.

You will need the installing engineers code , this is used to program all the different settings of the system.If you do not have it , then the system will have to be defaulted back to factory settings , BUT there is a chance the code could have been locked, meaning you can do no programming.

A 3amp or 7 amp will do fine..these are slightly dearer , but last longer. http://www.securitywarehouse.co.uk/catalog/index.php?main_page=product_info&cPath=36_46&products_id=113

Yes it will.

Hi , have you had the system serviced recently? , if it is still working then there may be a reason why it is giving trouble , and that could be interference from a faulty appliance , and changing the panel may not cure this. I would at least replace the battery.

The ADE panels have always had a SET terminal , which goes positive when the panel is set , although I dont have one in front of me , I'd be very surprised if the circuit board differs from the manual.Most likely is that the meter leads were the wrong way round .

Yes , all of your chosen components are compatible , I prefere the Texecom bells myself , but Ag6/8 are fine.Most single piezos are loud enough.

You could have a look at GJD light controllers , basically a pir to cover the drive , will turn on lights if required and give an audible indication of detection inside the house. http://www.securitywarehouse.co.uk/catalog/index.php?main_page=index&cPath=63_64

No , not on that panel.Why would you want that ?.

Hi , yes the new panel will come unlocked with default codes and will come with comprehensive user and engineer guides. You cannot tell if your current panel is locked unless you try to default it.It will revert back to factory settings apart from the engineers code , so you will be able to use it , but not program it.The code is locked in engineer mode by selecting an option.Again , it may or may not be locked.

I would remove all power , battery and mains , wait for 10 secs ,power up mains first , enter code to silence, then connect battery , close panel and press RESET.