I always but mask value in it so it can be seen easily

Agreed, it makes sense for a few reasons, so I realised at the time.

a) You don't need to reset if you have a site with intermittent issues (as at G3 tamper should be eng reset)

b) It displays on the keypad and log as a separate event to a tamper, increasing your information for diagnosis.

c) Mask on most controls is above 10K, having this huge shunt resistance increases the threshold of any fluctuations from the reed.

Nice to see not alone then. We put it down to the door not always stopping in same place and so sometimes misinterpreting this as interference.

I thought that was the idea of the cqr one, is it locates so removing the alignment possible issue?

Just to clarify then, are you saying rather than use the tamper loop of the contact just use the mask part, does this still meet g3 requirement?

37 minutes ago, Rubble1952 said:

Just to clarify then, are you saying rather than use the tamper loop of the contact just use the mask part, does this still meet g3 requirement?

 

No

 

We only use elmdene, only had faults like this with handed contacts until we swapped

Problem was being caused be the zone cables within the contact shorting to metallic housing and thus being fixed to metallic building putting a 0v onto steel work and then being picked up on the branch lines. Found dead shorts between data lines and earth. Doh!

I've had a CQR RSD (only Grade 2) go faulty after about 6 years, light use, never driven over, just became unreliable - though always at 3/4AM!

 

Changed it for an Elmdene 3 years back and nothing since.

Edited January 30, 20179 yr by datadiffusion

19 minutes ago, datadiffusion said:

I've had a CQR RSD (only Grade 2) go faulty after about 6 years, light use, never driven over, just became unreliable - though always at 3/4AM!

 

Changed it for an Elmdene 3 years back and nothing since.

You impact driver on it first time

Has anyone actually heard of someone defeating a g2 contact with magnets externally?. In thirty years I have not come across it, nor any colleagues I have spoken with!

Seems current M.O. for  bad guys is crash grab and dash!.