Jump to content
Security Installer Community
Eugene's DIY Den

Magnetic Contacts Sticking on Un-Opened Windows

Recommended Posts

47 minutes ago, aechlin said:

Why do you need 22 contacts anyway? You only need to put them on external entries/exits, let the PIR's do their job.

 

Alistair

Depends on how many opener's he has

 

Pirs won't do perimeter protection but save money tho

Share this post


Link to post
Share on other sites
29 minutes ago, james.wilson said:

Insurers like every external door contacted

Funny that many entries are the kitchen windows , or the panel in the door 

Share this post


Link to post
Share on other sites
1 hour ago, james.wilson said:

As 6wb to lower risk to prevent doors being left open as well as detection

Need grade 3 then , I seen doors left ajar where contact just comes within range to set lol but I guess still protected 

Share this post


Link to post
Share on other sites
6 hours ago, aechlin said:

Why do you need 22 contacts anyway? You only need to put them on external entries/exits, let the PIR's do their job.

 

Alistair

Just belt-and-braces.

Share this post


Link to post
Share on other sites

I notice since I installed my new SW 10-70 panel, I haven't had any false alarms. Separate tampers for each zone, so the sum of series resistances is less (11 sensors plus junction boxes, bell box, keypads etc). Maybe the immunity against transients spikes  and  bad connections due to tarnished tamper connections in junction boxes is better?

Share this post


Link to post
Share on other sites

True story this, today after 3 years in storage we wheeled out our (new at the time) Bosch dishwasher and said goodbye to the crappy built-in one that came with the house.

 

To my annoyance, it went into error 5 minutes after every cycle, even though it had been cleaned and drained before we moved.

 

What was it? The flow switch uses an externally mounted reed over a sealed into the main water jacket rotating wheel with magnet. Jammed shut. Mild percussion maintainance fixed the machine :)


So, I've decided to take my work back underground.... to stop it falling into the wrong hands

 

Share this post


Link to post
Share on other sites

Don't worry we've got 2 whippets and an outside toilet so you wouldn't feel too left out!


So, I've decided to take my work back underground.... to stop it falling into the wrong hands

 

Share this post


Link to post
Share on other sites
26 minutes ago, datadiffusion said:

Don't worry we've got 2 whippets and an outside toilet so you wouldn't feel too left out!

Tha moved t' Barnsley, pop rand I'll get't pan on t'ob forra brew. 


Nothing is foolproof to a sufficiently talented fool.


Share this post


Link to post
Share on other sites
11 hours ago, Eugene's DIY Den said:

I notice since I installed my new SW 10-70 panel, I haven't had any false alarms. Separate tampers for each zone, so the sum of series resistances is less (11 sensors plus junction boxes, bell box, keypads etc). Maybe the immunity against transients spikes  and  bad connections due to tarnished tamper connections in junction boxes is better?

What firmware is on panel?

Share this post


Link to post
Share on other sites
49 minutes ago, Eugene's DIY Den said:

Not sure, it's two years old. Why do you ask?

Just wondering how you update it , your in Ireland yes? 

 

Updates allow you to use some new devices that come out and fix any issues , although mostly I only needed to update for devices , firmware seems stable otherwise 

Share this post


Link to post
Share on other sites
4 hours ago, al-yeti said:

Just wondering how you update it , your in Ireland yes? 

 

Updates allow you to use some new devices that come out and fix any issues , although mostly I only needed to update for devices , firmware seems stable otherwise 

Yes, I'm in Ireland. I presume firmware upgrades can be installed via an RS232 serial connection to a laptop or similar, but  you have to be a professional installer to download them from the manufacturer's website. I'm curious though what constitutes an alarm condition on a sensor. I.e how long contacts have to be open in order to trigger the panel. If this was relatively long, it could make the panel more immune to transients. A magnetic contact/ PIR contact would probably open for 100ms. A transient could be shorter, but the software might detect it if it's scanning everything rapidly. On a couple of occasions with my old panel, a zone triggered with the panel armed when I pulled out a mains plug. The alarm cable was quite close to the mains cable though.

Share this post


Link to post
Share on other sites
7 hours ago, james.wilson said:

, If not an analysed circuit then the response time is greater than 300ms exactly for this purpose

On older "dumber" panels, would it have been less than this?

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.