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DessertDog
16-03-2011, 11:00 AM
I wonder if anyone can help with this ?
I have been asked to fit lazer beams at work what they want is a beam that goes across an opening and when the beam is broken an alarm will sound. I cant seem to find anything so any help would be great.
Thanks for looking.

Reddevil
16-03-2011, 11:15 AM
They use a similar system at work for fire detection, you would probably be better using infrared as i would think that there would be a product available ready to use, I would think lazer would be complex and expensive.

DessertDog
16-03-2011, 11:20 AM
Infra red would do i think just need to find somewhere that sells them lol.

Reddevil
16-03-2011, 11:22 AM
Try a couple of local alarm system installers they would probably supply what you need, there are some on the market for home use that use PIR like shed alarm plug and play typs maybe something on that line.


http://shop.ebay.co.uk/?_from=R40&_trksid=p5197.m570.l1313&_nkw=infrared+detector&_sacat=See-All-Categories

digdug
16-03-2011, 05:57 PM
I have seen similar ones working in shop doorways
like the one here
Beam Sensor - Infrared Entry Alarm - Door Entry Notifier (http://www.uk-automation.co.uk/products/Doorway-Beam-Sensor-Alarm-%7B47%7D-Chime.html)

DessertDog
16-03-2011, 07:27 PM
I have seen similar ones working in shop doorways
like the one here
Beam Sensor - Infrared Entry Alarm - Door Entry Notifier (To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. Thats just what im after cheers DigDug
Found a cheaper version here: http://www.maplin.co.uk/search?criteria=alarm%20beam&source=15&sd=y&c=brilliant2&u=home%20&%20car&t=alarm%20beam

10mg
16-03-2011, 07:43 PM
fopund something a little less polished:

MK120 IR Beam Break Detector : Miscellaneous Kits : Maplin (To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. 0Laptop%20Battery%20Suitable%20for%20Acer%20Aspire %201300)

only ?8.99


but seing as the company is paying for it... who cares :-)