KiddeSM120X Interconnect Accessories Smoke Relay Module

Easy to install and clear directions. I used this relay and a 120V to 24V transformer to connect 24V strobe and horn/siren units throughout my home. When the relay is activated, it supplies 120V to my transformer, which supplies the needed 24V to activate the strobes and horns... Was this necessary in my home?... No... But it's a unique setup, and now there's no mistaking a smoke event in my house! This would be very useful for individuals with hearing/visual deficits. I also like that I can use the 9V out from the relay to wire up a simple test button, which applies the 9V to the interconnect wire. If I wanted to go all geek out, I could use this to wire in a pull-station. Anyway, I can now turn on this test switch to activate the entire system, for as long as the switch is activated. This allows my family to run true-to-form fire drills, prevents me from pushing test buttons on ceilings, and also allows the testing of home automation triggers (phone calls, texts, turning lights on, etc). I have a Zwave sensor connected to the Normally Closed contact to trigger automation events, and a Halo+ smoke detector. I tucked the relay, transformer and all the wirenut connections into a junction box I installed in a laundry chute.

This worked perfectly for connecting my Kidde smoke alarms to my Honeywell Vista 21ip alarm system. I also purchased the CO120x to monitor my interconnected Kidde CO alarms. A couple of notes on my install:I ran a 14-3 NM out of the smoke alarm in my basement into a 4-11/16" junction box with a locking switch. The switch will allow me to turn the relays off if I am getting false alarms. I did an investigation and found that the NO & NC circuits stay out when power is cut. So shutting off power to the relays effectively disconnects the alarm system from the smoke and CO alarms. This could come in handy while soldering in the basement or if your cooking is causing a temporary problem. I put a locking switch on to ensure it won't accidentally be disconnected. I ran another 14-3 NM to an adjacent 4-11/16" junction box where I installed the two relays with double sided tape and made all electrical connections. I then ran the NO, NC, Common from the two relays into an adjacent but electrically isolated 1 gang junction box. I did this because you have to electrically isolate the 120v from the alarms low voltage wiring for safety. I then ran a 4 conductor cable from my alarm and used 2 conductors for the SM120x (NO & Common) and the other two for the CO120x (NO & Common). If you put this on Zone 1 you are required to install a 2 ohm end of line resister between the NO & Common on that associated relay. I also opted to install the resistor between the NO & Common of the CO120x. Then when you set up the zones be sure to select NO and EOLR. The EOLR provides line supervision. In a non alarm state the alarm system will read 2 ohms resistance in the circuit. In an alarmed state it will read infinity ohms resistance. This way if the line is cut or the connection is compromised your alarm will notify you with a trouble code.

BOTTOM LINE UP FRONTIf you already have a home alarm system, and Kidde wired smoke detectors, you can use this unit to connect your smokes to your central alarm system. The benefit, obviously, is that the fire department will be called in the event of a fire, even if you're not there or incapacitated.I installed it myself, and it was pretty easy, but hiring a professional to do this would still make it well worth it. It's nice having the peace of mind knowing a central alarm monitoring service is watching your smoke detectors 24/7. I imagine there is a big difference in outcome when the fire department is called as soon as the smokes go off versus when the neighbors finally notice the house is on fire!INSTALLATIONMost alarm systems, even the wireless ones, have the ability to monitor one or two hardwired alarms, be it a smoke detector relay like this or a window alarm. Some will want the wired alarm to be normally closed circuit, and some will expect normally open circuit. Fortunately, this relay module has outputs for both. The hardest part (and it's not hard) is just figuring out what your alarm system expects, and how much of a "termination resistor" it wants, if any. You just buy that resistor (if needed) at Radio Shack, pick the right leads according to your alarm manual and the relay module manual, and it's very easy to wire everything together. Your alarm system manual probably has an explicit diagram. You can wire this into any of your smoke detector boxes, so just pick the location that is most convenient to your alarm system.As I said, if the above instructions sound like something you don't want to mess with, then I would still recommend buying this and having a professional install it. I doubt it will take more than an hour of their time.If you already have an alarm system and Kidde smoke detectors installed in your home, this is a great buy. For a relatively small bit of extra money and time (over what you already paid for your security system) you'll have a fire alarm system similar to the ones commercial buildings have and the peace of mind of a monitored fire alarm system. My company doesn't even charge me any more per month. It's just another alarm zone as far as they are concerned, the only difference being that they will call the fire department instead of the police.

Bought this for the Kidde Smoke/CO detectors in my house. My ex-alarm company originally installed BRK relays on Kidde smoke detectors and they don't work. Installation was simple enough if you are familiar with relays and know whether your alarm is expecting NC or NO switch. My only concern is the unit felt warm after it was powered up for a few minutes. The unit has a DC output so I guess it has a transformer. I don't need the DC output so this is just going to waste energy. Overall I am happy with it, but it would be better with no DC output. The relay works great and the alarm goes off when I press the test button on the smoke detector.

I installed this relay for a sprinkler system and it works smoothly; no issues yet.

Bought it to meet the requirement from city to shut down the furnace in case of fire. Installation is easy and works very well with the hard wired smoke alarm. Need to read the manual carefully before installation.

Item was as advertised and arrived quickly.

Worked to interface my garage heat sensor to my kidde interconnected fire detectors…

relier des détecteurs de fumée sur un système d'alarme

I have this setup in several cell sites to help me monitor the smoke detectors. It works reliably and we only had a few fail on the 100s we have installed.