Wiring a siren into smoke detector

Old 04-12-15, 07:02 PM
Thread Starter
Join Date: Apr 2015
Location: USA
Posts: 1
Upvotes: 0
Received 0 Upvotes on 0 Posts
Wiring a siren into smoke detector


I have a, "Fortrezz SSA2USR Siren Strobe Alarm Wireless Z-wave Red Lense" that I am trying to wire into my smoke detector. It is a DC device that comes with a AC adapter. I am not sure if I can wire it, but I would like to know. Please help.

I do know that the smoke alarm wires are White- Neutral, Black- Hot, Red- communicator w/ other detectors.

The siren has one red and one black wire.

If I can not hook it directly to the smoke detector wires, can I buy an extension cord and splice that in to the smoke detector connections, followed by simply plugging in the DC adapter and hiding it all in the ceiling? If so, I just need to know which wires connect to what. I can upload pics if needed. Thanks
Old 04-13-15, 07:24 AM
Forum Topic Moderator
Join Date: Feb 2005
Location: Near Lansing, Michigan
Posts: 9,785
Upvotes: 0
Received 45 Upvotes on 43 Posts
You'll have to get a relay from your smoke detector manufacturer that is compatible with the interconnection signal the detectors send on the red wire. These relays are usually sold for the purpose of hooking your smoke detectors into a central home alarm system. That relay can then be used to control an external alarm siren through the low voltage side of the plug-in transformer (although that set up does seem a bit convoluted). If you can get a compatible relay that controls 120V, you could install a receptacle that switches on when the smoke detectors sound. The siren could be plugged in there. In any case, extension cords and splices hidden in the ceiling are not the right way to do it. Everything would need to be mounted in accessible junction boxes or panels.

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: