Hi, DIYers.
I'm Jorge from Alarm Grid.
Today I'm going to be talking a little bit about how the Qolsys
S-Line encryption works.
So the IQ 2 and the IQ 2 Plus both support the Qolsys S-Line
sensors.
Now s-Line sensors are encrypted sensors in the fact
that when they're paired with the system,
they share an encryption key.
And then after that pairing only the system and the sensor,
the S-Line sensor, will know what the next rolling code
transmission will be.
So that's actually how these S-Line sensors work,
they use rolling code transmissions.
The way that normal radio frequency sensors work,
like let's say the 433 megahertz, the 345 megahertz,
the 319.5 megahertz, these are all DSE Honeywell 2 gig
Interlogix normal Qolsys.
The way that these radio frequencies work
is that whenever a sensor is faulted, whenever a sensor is
tampered or restored, they send out the same radio frequency
signal.
And if, let's say, a burglar is standing around
with an RF sniffer, he can actually
duplicate that RF frequency that's being sent out,
or that transmission that's being sent
from the unencrypted sensor.
And then he can actually duplicate that,
and then when you guys leave the house,
they can go ahead and re-copy and send out that signal again
to start kind of spamming or spoofing the system.
The way that rolling code works and defeats this
is that only the panel and the sensor
know what the next rolling code transmission mean.
Now, what does rolling code mean?
It means that the transmission is constantly changing.
It's changing, it's not sending out the same signal
every single time.
So there's no way that a burglar that standing around with an RF
sniffer can duplicate the next thing because he
doesn't know what it is.
Only the system and the sensor will
know what the next transmission is going to be.
And the rolling code transmission
is for any faults, any tampers, and your restores.
And that's what S-Line line does and that's
how it protects you against any of these burglars that
are looking to spam or spoof your system.
Now, the S-Line sensors only work with the IQ 2 and the IQ 2
Plus, as long as you have the correct daughterboard card
in the IQ 2 Plus.
The IQ 2 already has the S-Line receiver daughterboard
card in it, so you don't worry about that.
But if you guys are doing the IQ 2 Plus,
it has the PowerG daughterboard card in every single IQ 2 Plus.
And then there's three different flavors.
There is one that has the Honeywell 2 gig daughterboard
card, there's one that has a DSE daughterboard card,
and the one that has the Qolsys Interlogix one.
That's the one you want to make sure you're
using if you're planning on getting S-Line sensors.
But PowerG has more encryption and it's longer range.
So normally if you have the IQ 2 Plus,
you're using PowerG anyways, but just in case you guys
want to mix and match sensors.
The S-Line line sensors also can work at a 319.5 megahertz
frequency.
So let's say you guys have a IQ 1, which is the first Qolsys
panel that was released, or even if you guys have an Interlogix
system, a Simon XT, a Simon XTi, Simon XTi-5,
these S-Line sensors will also work with these older
version of the systems but because they don't
have the receiver for the S-Line,
they'll just use the normal radio frequency, 319.5.
So they won't actually have the rolling transmission code.
So that was just a quick video to kind of just
explain how the rolling S-Line transmission works
with the S-Line sensors.
If you guys have any questions about compatibility,
how to program them in, if you guys have an IQ 2 or an IQ 2
Plus that you guys need help getting set up and monitored,
please feel free to send us an email to support@alarmgrid.com.
If you found the video helpful, make
sure you hit Like underneath, subscribe to our YouTube
channel, and hit the little bell icon so
whenever we upload new content you guys get notified.
I'm Jorge, and I'll see you guys next time.