PIR for external position

[coalpit]

I want a reasonably priced PIR that I can use in conjunction with my Scantronics 9651 box and is suitable for looking at an external wall area of about 10m length which has two vulnerable windows. These windows are alarmed but I want the alarm system to trigger when someone intrudes into this hidden end of the building.

General information: Although I've got every window and external door alarmed and all the interior spaces covered by PIRs, I want to ensure that would be intruders are put off actually attempting to break in!

Many thanks for all advice.

 

[sparkymarka]

optex bx80 boundry guard will do the trick or a set of active beams across the windows. but dont expect any external device to be 100 per cent false alarm free.

 

[coalpit]

Many thanks for your suggestion.

Cheers

Richard