Can we make smoke sensor to work as siren for security?
No, as it is not possible to trigger it on fibaro smoke sensor. The simply don’t give such option.
Is there any way to link sensors together?
If one detects smoke one or all of the others will sound as well?
This is more or less the standard today, but it seems to not be possible with the fibaro one?..
Even 20USD sensors will do this…
If there would be a way to trigger siren manually then there would be lot of different ways to link sensors.
Red manual and it says:
“13. Alarm broadcast
A value other than 0 means that alarms are being sent in broadcast mode, i.e. to
all devices within a Fibaro Smoke Sensor’s range.
Available settings: 0 - 3
0 – broadcast inactive
1 – SMOKE ALARM command broadcast (2-nd & 4-th Association Group) active;
casing opening notification broadcast (3-rd & 5-th Association Group) inactive
2 – SMOKE ALARM command broadcast (2-nd & 4-th Association Group) inactive;
casing opening notification broadcast (3-rd & 5-th Association Group) active
3 – SMOKE ALARM command broadcast (2-nd & 4-th Association Group) active;
casing opening notification broadcast (3-rd & 5-th Association Group) active.
Default setting: 0 (broadcast inactive)
Parameter size: 1 [byte]”
Btrial seems to be the man who knows lot about this. I’m using this device handler:
It’s only one that is working for me. Others was recognized as flood sensors etc and couldn’t get them work. I do not have broadcast settings included in device handler and I do not have led settings.
Could it be possible to add these settings to your device handler?
From another topic:
“You can use Z-wave tweaker to do this. Change the device handler to Z-wave tweaker. set the option and then change it back to the smoke detecter.”
I have to test this and see if it works. ATN1 you should too.
I’m sorry but… what? 
Whats this going to do?
Activate option to broadcast alarms. If I got it right you asked is there a way to link sensors together so that when one senses smoke it broadcasts alarm to all sensors.
I did not test this yet.
I’m not sure how to activate the setting 
Im not 100% sure too but I suppose we should proceed like this:
- update fibaro Smoke sensors to latest firmware. Update is possible to do as OTA according Fibaro manual but ST hub does not support OTA updates to z wave devices.
- after fw update fibaro Sensor(s) device handler should be changed in ST to z wave tweaker.
- then from tweaker there should be option to change broadcast settings.
- after setup change device handler back to what ever you used earlier.
And done.
Has there been any progress on making broadcasting work?