BRK has a relay module you can purchase and integrate with ST via contact sensor. When your the interconnect wire is set, the relay will change the NO/NC wires that a contact sensor can detect.
Many of us on the community have done this:
Yes that is correct. When I bought my house I only had 1 wired smoke detector in my upstairs hallway. Code in my area has changed and now requires smoke detectors in all bedrooms. When I was renovating my kitchen I didn’t want to get caught up in all of that and have to pay an electrician for something I could do so I installed a wired smoke detector in all bedrooms and connected them to the hallway smoke detector in parallel: hallway to bedroom 4, bedroom 4 to bedroom 3, and so on. Then I found a way to run the wire from the attic to the crawl space below the first floor so I removed my downstairs battery hallway detector and connected it with a wired one. Long story short I knew how it was all wired together and I had easy access to the last run. The bedroom detectors are just smo…
I’m sure this has been done before but I know I’ve seen lots of discussions on the best way to integrate existing smoke/CO sensors into SmartThings. After lots of research I did what I thought was the best way for my situation and figured I’d write up what I did in case it could help someone else. Cost me less then $100 and about 6 - 8 hours of work, probably less if I didn’t write this up and take pictures. The way I did it also does not interfere with the existing sensor operation which was my main concern.
My house was built two years ago and has sensors to meet code. That means smoke in each of the three bedrooms, a combination smoke/CO in the upstairs hallway, a smoke in the first floor hallway near the kitchen, and another smoke in the basement. They are all Kidde brand and int…