Digisender and home alarm interference

"Very unlikely to damage components and thus put the system ( or part of it ) out of action permanently. But temporary "damage" to the system can happen as a result of blocking."

My external siren is stilll not working.....are you sure it can't permanently damage items?

Unless it's just taking time to re -program....seems like it may have killed it. sensors are fine...

Like what do you mean by "temporary "damage"
 
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I accept that the term "Temporary damage" is a bit misleading. It refers to situations when the normal functionality of the system is not possible but also without any physical damage being done to components.
 
So will my external siren not come back working now as if had digi senders off for 5 days now and still no luck getting that to work again

Sensors are ok.

Reset or re program/pairing required? In which case I'll have to pay for him to come out back to me :(
 
Im still having issues with my external siren.....the video senders have been off for over a week now and still luck getting it to work again.
the PIR sensors are fine.

Do you think it could have permanently been damaged due to signal interference? or maybe a reset/re program is required?

Any help really appreciated as this is doing my nut in! bloody 433mhz!!!
 
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Dave123456789 said:
Do you think it could have permanently been damaged due to signal interference?
Click to expand...
Not possible unless someone was pumping out a lot ( hundreds of watts ) of RF energy into an aerial a few inches from the siren. That might cook the aerial input circuitry in the siren's receiver.

What is most likely is that the siren has lost the identity of the unit(s) it has to listen to. So maybe you need to "re-learn" the components ( sensors, panel, fobs etc etc ) so they all know the identities of the components in the system.

Or maybe the siren has failed due to poor quality components and / or poor quality design and / or poor quality assembly.

Sorry to be negative but some of the stuff on the internet is very dubious.

The data sheet referes to the use of 315MHz. that frequency cannot be legally used in the UK ( not for DIY burglar alarms ). It also refers to 433 +/- 0.2Mhz The legal licence freguency in the UK is 433.92 MHz. 433.20 Mhz is assigned to licenced equipment in Southampton and Bolsover ( and other locations ) If you live near one of those locations and your burglar alarm equipment is transmitting on 433.20 MHz you will be interfering with licenced equipment. This could result in a notice to cease using the equipment. Or the licenced users of 433.20 Mhz have every legal right to transmit almost continuously on that frequency and thus prevent your system from working.
 
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I checked with him the manual is generic - its all 433. so im not sure what has caused it not stop syncing. maybe the interference.

he will come to reset alarm/siren and pair it all up and a cost of £100!!!

and then told me to be safe - NEVER turn the sky receivers on as they may interfere with it AGAIN and he wont change at all.!!!!
 
smart wireless, may be the wrong term, but say I was getting jamming, if the system was smart it could change the frequency to something less crowded.

I know the new visonic panel has a multi frequency change to try and help avoid jamming, how much of a sales gimmick or smart it is another matter,
 
secureiam said:
if the system was smart it could change the frequency to something less crowded.
Click to expand...
There is a very limited number of frequencies that are licence exempt. In the 433.xx MHz band there is only one 433.9200 MHz. In the 868 MHz band there are a couple of frequencies so channel switching could be possible but this would require two way communications and together with sufficient intelligence in every module to ensure that all modules were working on the same frequency. This makes the units much more complicated and thus much more expensive.
 
well you pay premiums for new technology has always been the case.

As for manufacturing costs I suspect they wouldn't be so much more expensive, the R&D time and effort you want to claw back these costs as quickly as possible, before your competitors get the edge with there new offering , this is why you see old tech prices falling and new tech costs more.

Once you have your costs covered and making nice profits you then look at how you can improve your market share to the masses and not just those wanting the latest tech.

for every £1 increase in manufacturing expect the distributor to pay £2 and the next person in the chain £4 and so on. Not saying it works exactly like that but from my time in manufacturing companies it wasn't a million miles away.

so my £50 purchase cost my supplier £25 and there supplier/ manufacturer £12.50 shorter distribution chains better prices
 
Can somebody please explain to me for my peace of mind what IR operating frequency: refers too?

I thought IR was to do with remote controlling from another room - or is it associated with the A/V part of the videosender?



http://www.maplin.co.uk/p/nikkai-58ghz-phono-video-sender-kit-a86kh
"IR operating frequency: 433.92 MHz "

As mentioned i was getting interference and its stopped my siren working. but atleast sensors are all good so i get my texts and internal siren works too.

but i wondered if it was the remote control part of the device that functions on 433.92 MHz (AS DOES THE HOME ALARM) - then if i could just take that lead out.....but still use the sender for A/V purposes???
 
The video signal is transmitted on 5.8 GHz from Sender to Receiver.

Almost certainly the the remote hand held controllers send commands by modulated infra red to the Receiver which then re-transmits them on 433.92MHz to the Sender
 
interesting - i am going to switch my video senders back on in that case - and just suffer using the sky mobile app to change channels.

and see if this still interferes with my alarm

im not so fussed about external siren as there is also an internal siren and also i get texts alerts if it goes off.

atleast all the PIR sensors work WITH THE VIDEO SENDER OFF.
with it on - only a few worked.

BUT now i will test the alarm with the IR wire/sensor taken out of the Videosender transmitter unit - (as this is actually the 433 clash)
and see how i go.


i was thinking of watching in other rooms via co-axial//magic eye now - but that works via IR too i believe?? which could also cause a clash???
 
Sadly the external siren is intermittent - sometimes rings sometimes doesnt even respond (beep) to commands to arm/disarm.

either the sky videosenders have messed them up - and i won't be able to fix until the guy comes and perhaps repgrams them or something.

or the neighbour has something that is messing JUST THE EXTERNAL siren up....a 433 bell perhaps

i was sure it was the video sender but thats been off for almost 2 weeks now.

not sure what 433Mhz UHF - the UHF part means??

i thought that was the remote control part of the video sender but could be the A/V component too.

its all messed up though sadly so i'll have to hope he can fix it else live without an external siren (main deterrent!!!)
 
I got my alarm sorted had to pay for new external siren and magic eye is not causing interference thank god so binned wireless receivers which were'433mhz same as alarm

I need A wireless bell now in my shower for when water needs to be turned off in kitchen (flow is rubbish)

All I can see on eBay is 433mhz bells is this standard??
Even Maplim

http://www.maplin.co.uk/p/uni-com-portable-door-chime-n76ce

I obviously don't want another clash which would cause interference
 
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