Grade 2notification option"X" = non signalling

i see

I would recommend Elmdene but yes the range is reduced on G3 contacts but they are much more secure.

gus i dont get you re user setting on 2x

I would recommend Elmdene but yes the range is reduced on G3 contacts but they are much more secure.

gus i dont get you re user setting on 2x

timed set on non DD243 systems - you think the reg writers forgot that some people might want a "proper" alarm but without the comms?

2x is a UK only variant, europe only do audibles at G1. so yeah they did forget about it. But to be fair audibles are only for low risk sites anyway, so maybe there is an argument for that

But to be fair audibles are only for low risk sites anyway, so maybe there is an argument for that

i would disagree - in the main the differences between the grades are to do with protecting the equipment to ensure it works, not the likely hood of the site been attempted itself - a contact is as much at risk in either grade. The minimum standard should have been equivalent to G2 and G1 should have been outlawed

In fact there should be just one grade and the signalling / enhancements / requirments dealt with by DD243.

too late for a rewrite ............?

Part of grading of equipment is about the expected grade of intruder and level of knowledge known to be able to defeat, but you have to asses the risk of the liklihood of a highly skilled burglar using these skills on a G2x system protecting a very low risk house. If you feel for instance that the sensors and door contacts are 'at risk' of defeating then you must grade accordingly. I do accept that any contact is equally at risk but the site isnt. When you do the risk assesment and liase with the insurance about the required grade, you are taking all these points into account.

The original theory was that Grade 1 was not going to be used in the UK but some people want them due to their lower cost. The bulk of contacts and panels sold are G1 types.

DD243 is again a UK only std that does call EN but is nowt to do with signalling requirements. I dont agree that the signalling type should be standardised as there are good cases where on G2 systems a Digi is more than adequate. If the std enforced Dual path signalling it would force low risk G2 sites to pay dual path money even if their path was secure. But the bulk of what we do is enhanced signalling as the phone line is usually at risk.

DD243 is having its final rewrite now under the laws that govern std's a draft for development can only be re-written 3 times then its deemed as 'developed' and must be adopted. As the UK has agreed to adopt EN regs if there is an EN for confirmation we MUST adopt that, but if a BS is released after this development process we 'can' keep a BS for 10 yrs even if an EN exisits, but once an EN is published its likly we would adopt it.

Part of grading of equipment is about the expected grade of intruder and level of knowledge known to be able to defeat, but you have to asses the risk of the liklihood of a highly skilled burglar using these skills on a G2x system protecting a very low risk house. If you feel for instance that the sensors and door contacts are 'at risk' of defeating then you must grade accordingly. I do accept that any contact is equally at risk but the site isnt. When you do the risk assesment and liase with the insurance about the required grade, you are taking all these points into account.

The original theory was that Grade 1 was not going to be used in the UK but some people want them due to their lower cost. The bulk of contacts and panels sold are G1 types.

DD243 is again a UK only std that does call EN but is nowt to do with signalling requirements. I dont agree that the signalling type should be standardised as there are good cases where on G2 systems a Digi is more than adequate. If the std enforced Dual path signalling it would force low risk G2 sites to pay dual path money even if their path was secure. But the bulk of what we do is enhanced signalling as the phone line is usually at risk.

DD243 is having its final rewrite now under the laws that govern std's a draft for development can only be re-written 3 times then its deemed as 'developed' and must be adopted. As the UK has agreed to adopt EN regs if there is an EN for confirmation we MUST adopt that, but if a BS is released after this development process we 'can' keep a BS for 10 yrs even if an EN exisits, but once an EN is published its likly we would adopt it.

so really the only variant SHOULD have been the signalling option? talk about make things harder than they have to be .............

if everything was grade 4 yes, as it is no.