From what I remember the wording is along the lines of "non system operators should not be given any indication of coverage or status from the CIE or detection devices" There is a caveat that the user or engineer can activate these indications for testing but after 120s of leaving the test it returns back to off/banner message.

This is mandatory at Grade 3 and recommended based on risk for Grade 2 IIRC.

yeah cant show coverage to level 1 users. How you do this when doing a walk test without emptying the building is another issue

On 23/04/2020 at 23:16, al-yeti said:

All grade 3 must be anti mask? 

What if you are adding kit to the grade 3 system that isnt grade 3? Perimeter beams for instance? Told its ok we need to right a deviation, makes no sense to me where someone can open a grd3 door contact then break an ungraded beam, ? Is this still a confirmed alarm

1 hour ago, Alarmbloke said:

What if you are adding kit to the grade 3 system that isnt grade 3? Perimeter beams for instance? Told its ok we need to right a deviation, makes no sense to me where someone can open a grd3 door contact then break an ungraded beam, ? Is this still a confirmed alarm

The Grade of a system is defined by the lowest graded component so if you fit a grade 2 component the system will be G2

As above if you use a grade 1 component on a grade 3 system the whole system becomes grade 1

On 22/07/2020 at 20:33, PeterJames said:

The Grade of a system is defined by the lowest graded component so if you fit a grade 2 component the system will be G2

Yes i understand that, im talking kit that cant be graded, 

We done a job and had to fit perimeter beams around perimeter,  because the beams where not graded, we where told we could keep at as grd3 but need to do a deviation explaining no other devices at a graded level where available, 

Also finding some breakglass detectors are xlaiming ro be g3 by there model number but are infact grade 2 etc

IIf iisnt used for monitoring then it could be listed as auxiliary items  

There is no method to do 'variations' for intruder, there should be though. 

There was a lot of devices that were grade 3 dropped to grade 2 when the rear tamper rules changed

off topic-

 

I fitted some grade 3 fmc's contacts today, ya90

 

I thought they would be a ball ache, but they appear to just "work" no idea what make them g3 ?

 

There all potted and only can have the magnet in one place so I suppose easier to design?