I dont know that brand im afraid. You could fit a response pager to it, but i would suggest you contact the installer and or maintainer.
If you let us know the area, im sure someone here can offer their services.
That PIR wont work on your existing receiever. You will either need a newer reciever or a powermax plus control panel.
Id be concerned using any movement sensor in an area with high animal movement. To a point it will be function, but any movement detector will false alarm occasionally in that environment. You might be better of looking at the optex units or active beams.
The dialler will dial the preset numbers on alarm. If you want individual notification of the circuits you want to use something different to a std dialler.
Id advise a menvier M12
http://www.securitywarehouse.co.uk/catalog/index.php?main_page=product_info&products_id=638
this will allow programming in the sensor as to which type of detection to use, ie heat/ smoke etc
That panel is the onboard keypad variant and does not come with a remote keypad, however it will accept upto 2 remote keypads.
The blank end station variant does come with a keypad as it doesnt have an onboard one.
The sensors are the same worldwide apart from the frequencies. As long as your panel is 868 then a visonic 868MHz will be fine.
The language is not user programmable.
No. WHile some of the components are grade 2, the control panel isnt. You will need to use something like the castle euro mini or scantronic 9651 for grade 2 compliance.
Wireless wise you will have to order 500r parts of the correct freq to match your panel. So yes.
bellbox wise the 500r will accept any hard wired bell. So to suit your bdget etc.
Support
yes.
It's best imho to have only a device per zone. This will then allow easy identification of the device that alarmed etc.
You will wire the circuit pair ie zone 2 to the alarm pair in the detector.
In what way?
If you mean it can be unplugged then yes it could. But you shouldnt plug them in anyway. They should be hard wired into a spur. But any proper panel has battery backup so if your burglar unplugged it he would have to waut a minimum of 12 hours for the panel to go flat. Then if your remote signalling the panel would send a low battery before dying. If its audible only the sounder would sound once the panel died.
All that assumes it installed and configured correctly