Detector(2) suitable for...

[SteveS]

I am upgrading the alarm system in my home and I am looking for...

 

1/. A quality detector to use in my conservatory which, being on the SW side of the house, experiences very high temperatures in the summer the obvious changes from direct sunlight to shade. I also have a problem in that the ideal location - where the sun will not strike the unit - has a piece of furniture obstructing. So I can only site in a position where at times the sun may actually strike the unit. Ideally I would like a unit that incorporates glass break detection

 

2/. We have a log cabin. I am concerned that - should anyone decide to enter one of the methods they could easily use is a battery operated jig/power saw to create a temporary doorway. I think I have seen a vibration detector that MIGHT pick up on this type of attack: am I mistaken

 

3/. Also have a couple of mildly substantial garden sheds, having run alarm cable to these can you suggest a detector that might be sufficiently tolerant to a "shed" environment?

 

Thank in anticipation

 

Steve

[Secware_Tech6]

Steve

 

1. The only sensor i know of with built in Glass break is the crow unit

http://www.securitywarehouse.co.uk/catalog/index.php?main_page=product_info&products_id=1522

 

but the movement sensor part is not suitable for your application.

For extremes of temprature and or direct sunlight any PIR sensor will be susceptible to nuisance alarms. In these situations id recommend a Dualtec.

 

As with everything these vary and all have their plus and minus's. As a Dualtec is PIR and microwave based (both technologies have to alarm) a false alarm on the pir side alone will not cause the sensor to alarm as the microwave side hasnt activated, and vice versa. But while a pir cannot detect through glass a microwave can. Because of this id recommend a Honeywell DT7550 or 7450 sensor with a K band Microwave. A k band is a higher freq so is harder for the waves to penetrate past the detction area. But correct setup is essential.

http://www.securitywarehouse.co.uk/catalog/index.php?main_page=product_info&products_id=1164

 

2. I would expect a vibrations sensor to detect this as its high freq vibration, but you will need more than 1 per wall. See the manufacturers guidance notes for more info on ranges.

http://www.securitywarehouse.co.uk/catalog/index.php?main_page=product_info&cPath=36_56&products_id=619

 

3. If they are very 'harsh' environments then consider one of the external sensors. Alternativly a dualtec. Id probably look at a 7x50 honeywell or an optex mx40.

http://www.securitywarehouse.co.uk/catalog/index.php?main_page=product_info&products_id=436

[SteveS]

Thank you for you reply.

 

Steve