I have been working on a 12-zone conversion from my old Ademco panel that has been inactive for years. On zone 1 the smoke detectors are connected with a black and red wire. These are tied into multiple other 2 wire and 4 wire bundles to chain up 11 smoke detectors throughout the house. All of the smoke detectors are System Sensor 2100TS. They appear to be 2-wire smoke detectors.
Is there any way I can power these smoke detectors without retaining my ademco panel?
Is there anyway to convert these detectors (using the same wiring) to work with Konnected?
The detectors are surely over 10 yrs old, so I will likely replace them anyway. The question is can I replace with a similar upgraded version and keep using original wiring? The advantage being aesthetics and not having to change batteries.
My last thought was just replacing all with battery powered first alert detectors - which will do the job but not as slick as low voltage wired detectors.
Coming to revive this. Glad someone explained exactly what i see. The old transformer which dummy me threw away but at least i have pictures was wired to zone one with a blue and yellow wire. Then smokes is a 2 wire run from another zone. I’m not sure how i’m supposed to power the smoke detectors.
The short answer is – two-wire smoke detectors do not work with Konnected. Please reference this KB doc (and the linked pages) for complete information: Smoke & Carbon Monoxide Detectors
Two-wire smoke alarms from traditional alarm panels require 12V power over the two wires and employ a special “polarity reversal” mechanism where the smoke detectors reverse the polarity of the power to the detector to signal an alarm. This will NOT work when wired to Konnected, and will likely cause a short circuit and damage to the board.
We recommend that you replace the 2-wire smoke detectors with 4-wire models that have a separate pair for power and signal. Another option is the System Sensor COSMOD2W which is like an interface to the 2-wire smoke detectors that powers them and provides separate output zones for Smoke and CO that can be wired to a zone on the Konnected Alarm Panel.
I do not recall if 2 wire are open or closed but you can test each then set accordingly within Konnected. You will need to tie like detectors only in series to work.
I have the Ademco Vista 20p which I’m guessing many who come across this thread will also have. Should we go the route Nate suggests above " Another option is the System Sensor COSMOD2W which is like an interface to the 2-wire smoke detectors that powers them and provides separate output zones for Smoke and CO that can be wired to a zone on the Konnected Alarm Panel. " how exactly does this get wired? I understand the 2 power leads would go into the relay (but where in the relay and what 2 wires would be the out and connected to a zone of the Konnected board? I’d be happy to go this route and report back so future Konnected customers have the info they need. Thanks!
The Konnected Alarm Panel is wired to the left side. SMOKE AUXPOWER is wired to 12V+ and - (0V) – this can be either the AUX out on the Konnected device, or a dedicated power supply.
SMOKE ZONE and CO ZONE is wired to any input zone on the Konnected panel. Set them up as a smoke/fire and carbon monoxide zone types in the app.
If you want, you can optionally use a relay to interrupt the SMOKE AUXPOWER to reset the smoke alarms. This would be set up as a separate Momentary output that momentarily opens a normally-closed relay.
Thank you. Bear with me since electronics are not my strong suit. I want to dumb this down. The output from my existing alarm panel to the smoke detectors is 12V. Those two leads power the combo smoke/CO detectors and there’s a 3rd wire (not in the panel) that connects the smoke/CO detectors together so when one detects something they all go off.
Now for connecting all this to Konnected. For reference I have the Konnected Alarm Panel (not pro).
Referring to the wiring diagram link Nate posted (Top page 2-wire):
The wiring will be as follows:
Run a lead from the “+” on the Konnected alarm panel to the top left lead on the COSMOD2W “Power In +”
Run a lead from the “Aux -” on the Konnected alarm panel to the 2nd from top left lead on the COSMOD2W “Power In -”
Doing the above now gets power from the Konnected panel into the COSMOD2W.
Next step is now getting the signal back from the COSMOD2W to the Konnected panel zone. To do this:
Run a lead from the COSMOD2W “smoke zone” (3rd from top left side) to a zone # on the Konnected panel.
Run a lead from the COSMOD2W “smoke zone” (4th from top left side) to the corresponding G zone on the Konnected panel.
Doing above now has the signal going back to the Konnected panel. Also, doing the above is for smoke detectors. If you wanted to do CO you would do above but for the CO zone.
Last step is having the signal go to the smoke/CO detectors themselves. That connection will be between the COSMOD2W and the detectors. To do that take the 2 existing wires from the old alarm panel that feed the detectors and connect those to the COSMOD2W “IDC +” and "IDC - " outputs (right side of COSMOD2W 5th and 6th terminals from top).
Do I have that all correct?
Finally, the reference to the optional relay to the Smoke Auxpower to reset the smoke alarms. A few questions on that:
-What would the relay do?
-What happens if I don’t put a a relay in? Does the alarm just keep going off and if so how would I turn it off?
Assuming I decide to go with the relay, what relay would I need (link)? And how exactly would it be wired up?