Yale 6400

[Jaffar83]

We have had our Yale 6400 for around two years and have had no issues.
However today the system was unarmed and the siren started sounding for no reason, nothing was logged on the control panel and the tamper switch is solid on the siren any ideas?

secondly if I loose all faith in the siren can I remove the battery’s and just use the siren on the internal control panel to alert us at night?

 

[JohnD]

If it was just the siren and not the control panel, it's the siren causing it.

Pretty sure to be the tamper switch.

Take it off the wall, clean and lube, check the action, confirm that the wall behind the switch is flat and solid. You should hear it click when pressed or released. Look out for anything that might be expanding or moving when the hot sun shines on it, or any movement caused by wind or wildlife.

Also check for traces of corrosion or damage in the battery box or wiring. All the electronics are sealed in a plastic enclosure so not easily damaged.

Keep the siren box in the house for a few days, under a pile of cushions or in a cupboard in case it goes off, pressed against a flat surface to compress the tamper spring. See if it it makes any difference where in the house you keep it.

If necessary you can buy a replacement siren box. All the ones from the 6000 range are compatible, you just have to set the jumpers.

Are you in a coastal area?

Is there anything unusual near your house, such as arc-welders, radio transmitter, wireless apparatus such as baby alarm? These very rarely cause trouble but it is not impossible.

 

[bernardgreen]

These "false alarms" are the only way the system can indicate that the siren's receiver is being blocked and therefore cannot respond to messages from the panel.

This is the same as the wires being cut on a wired system.

The siren cannot send an "I am blocked" message to the panel so the log will be unaware of the blocking. If the signal causing the block is strong enough to also affect the receiver in the panel then the log should have a record of this.

In the past Yale recommended turning off the jamming detection if there were too many "false alarms". That is not a good idea.

Some wireless alarms have been targeted by criminals with transmitters that block the siren to cause a false alarm. When the owner eventually turns off the jamming detection to prevent any more "false alarms" the criminals then know that they can then block the siren and break in without the siren sounding.

Read more: https://www.diynot.com/diy/threads/yale-hsa6400-possible-siren-issue.412111/#ixzz6QGLZFuxY

 

[JohnD]

Although the chances of a burglar deliberately attempting to jam your alarm are vanishingly small. Note that the control panel has not detected an attempt.

Round my way the 14-year old burglars have difficulty coping with any technology more sophisticated than a brick.

Are you known to have quantities of gold or cocaine stored in your house?

 

[bernardgreen]

Note that the control panel has not detected an attempt.

The blocking / jamming signal having passed through a wall to the inside the building may not then be strong enough to block the receiver in the panel.

The siren does not have a transmitter so cannot inform the panel that it is being jammed / blocked.

Does the control panel have jamming detection ?.

 

[JohnD]

It is highly improbable that the OP has any cause other than the tamper switch on the siren.

Count up the number of Yale Alarm threads you can find on this forum, then count up the number of people saying they have been burgled by somebody who jammed their Yale alarm.




I will save you the trouble of counting the second set.

It is zero.

If you count the number of people asking about new locks after their door has been kicked in by a burglar, it is not zero.

 

[bernardgreen]

I will save you the trouble of counting the second set.

If you do not look then you can only find zero

Quoting from https://www.ofcom.org.uk/spectrum/interference-enforcement/spectrum-offences/jammers

How jammers work
A jammer normally functions by emitting an electromagnetic disturbance, sometimes called ‘noise’, on a band at an intensity that overwhelms the target receiver, making reception impossible.

Jammers may be designed to affect specific services like the frequencies allocated for mobile phone services, satellite navigation systems, Wi-Fi or security systems. Jammers have been used to commit crime.

Criminal offences
Use of jammers
It is a crime to use any apparatus, including jammers, for the purposes of deliberately interfering with wireless telegraphy (radio communications) in the UK. The maximum penalty is two years’ imprisonment and/or an unlimited fine. See section 68 of the Wireless Telegraphy Act 2006.

 

[JohnD]

people saying they have been burgled by somebody who jammed their Yale alarm

Is what I said.