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Installation and Classification of Burglar and Holdup Alarm Systems

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fyretek

Member
Hi All, does anyone have the actual complete info on this doc UL 681 ? specificly I'm looking for such things as ul's idea of how far the max gap can be between a contact and a magnet before it goes off, etc.. or how many steps can you take before a infrared or microwave motion detector goes off.

I have seen the UL scope, it refrences UL 827 and UL 1076 also Article 725 but only gives you a brief outline of the topic, and no I do not have the $300 for this one doc lol.

If there is any one who has taken the alarm company operators test here in Cal or Has some of the Ul info and can share it ti would be greatly appreciated, I can even offer free beer! lol

Thanks.
 
renosteinke

renosteinke

Senior Member
Location
NE Arkansas
UL really does not have a specification like the one you are asking about. They only test the equipment according to the manufacturer's specifications. That is, if the instructions say a 1/8" gap, they set it up that way for their testing.

A second type of UL listing is for complete, installed alarm systems. In that case, UL will consider such factors as the distance to the monitoring station, and the response time, before listing an installation.

Despite all the pretty UL stickers you may see, UL has a rather weak position in the alarm business. Simply put, UL Standards are considerably weaker than the industry's own standards. The various alarm manufacturers have their own certifications of installers, and cover installation details in far greater depth than any UL standard.

In testing alarm components, UL standards are more focused on false alarms, and environmental factors, than on the effectiveness of the alarm system.

While testing of fire alarm sensors actually has some real fires used in the evaluation, testing of burglary alarms, etc., is nowhere near as precise.
 
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