I am about to order the Scantronic Homelink 55 from your site but have a

couple of questions...

Can I add an extra keypad with prox reader?

The description of the

Homelink mentions only the 9940 and 41 but they are no longer available

I think?

Will the Scantronic PIR's (wired types) work OK with the system, as I

only need wireless contacts for the doors, all other sensors will be wired?

Any recommendations for a suitable external sounder?

Can I add an extra keypad with prox reader?

Yes

The description of the Homelink mentions only the 9940 and 41 but they are no longer available

I think?

The 9940 has become the 9943

http://www.securitywarehouse.co.uk/catalog/index.php?main_page=product_info&products_id=632

Will the Scantronic PIR's (wired types) work OK with the system, as I

only need wireless contacts for the doors, all other sensors will be wired?

Yes pretty much any pro hard wired detector will work

Any recommendations for a suitable external sounder?

a cheap one, id recommend the honeywell AG6 / 8