Zooz | Kidde DIY Smart Smoke Alarm Kit

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SIMPLE ALERTS

We put together this simple solution for smart monitoring of your existing smoke alarms to make your life easier and safer. Just connect the 3 pigtail wires to the last smoke alarm in series, add the Zooz relay to your Z-Wave hub, and receive status notifications in the app whenever any of your smoke alarms is triggered. Make sure your detectors are interconnected. Click here for step-by-step installation instructions.

IN THIS KIT:

1 x ZOOZ Z-WAVE PLUS 700 SERIES DRY CONTACT RELAY ZEN51

This small 700 series Z-Wave relay is perfect for 120 V signal monitoring. It will send an on report to your hub whenever the smoke alarm is triggered and will turn back off when the alarm is cleared. You won't control it other than to set it in the off position right after installation.

Optionally, you can connect a 120 V or a dry contact load to be triggered by the ZEN51 relay anytime the alarm goes off. It could be a strobing light or an outdoor siren to boost the alert. This device is not equipped with battery back-up so it will not function during a power failure.
Find out more about the Zooz 700 Series ZEN51 Dry Contact Relay

1 x KIDDE SMOKE ALARM RELAY MODULE SM120X
The Kidde module reads the smoke alarm interconnect signal and activates the ZEN51 relay to send a Z-Wave report to your hub, making all of your smoke detectors at home smarter and safer. 
Please make sure you read the user manual for the device including all safety warnings. It is recommended that a licensed electrician performs the installation.

Wiring diagram for the Zooz | Kidde Smart Smoke Alarm DIY Kit

INSTALLATION TIPS:

  • Analog interconnected smoke detectors required (sold separately) - this kit is only to translate the signal from your existing alarms to Z-Wave.
  • Use with any standard interconnect smoke alarms (not limited to the Kidde brand).
  • Always turn off the power at the breaker before handling the wiring, this is a 120 V high-voltage installation.
  • The last detector in series will be the one that only has 3 wires coming into the box (vs 5 or more in other boxes). This is where you'll have the most space to install your smart kit in.
  • We've done some of the work for you, all you need to do is connect the Kidde module to your detector. Connect the black pigtail to power (line), white pigtail to neutral, and orange pigtail to the alarm output - make sure you identified the wires on your detector correctly before the installation, never follow the colors of the wires blindly.
  • When adding the ZEN51 relay to your hub, you may need to scan the QR code or enter the PIN code located on the back of the relay (if your system supports SmartStart). Read more about adding the device to your hub here.
  • Once the ZEN51 relay is added, it will display as a Z-Wave switch or on/off device. Make sure you turn it OFF in the interface before testing it.
  • Test the detector's alarm (follow the instructions for your unit) to see if the status of the relay changes to ON in your hub's interface once the alarm goes off. Remember to warn your family members or roommates when testing this!
  • Always turn the power off when securing the module kit and the detector back in the electrical box.
  • You'll need to create an automation in your hub for a notification to be sent to your phone or email once the status on the relay changes to ON so you can immediately know if the alarm is triggered.

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Customer Reviews

Based on 4 reviews
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J
Jon
Peace of mind for pet owners.

I got this device for Christmas and just installed it this week. If you have a setup where your devices are brought into HomeKit (Mine is an RPi 4 w/ zwave stick -> zwavejs2mqtt -> mqttthing in HomeBridge) the notification for smoke detectors is great. It’s considered a critical alert and makes a noise on your device even if it’s in silent mode. (Make sure you alert other family members before you test, they’ll freak out otherwise!)

My only qualm was that the device wouldn’t fit into any of my smoke alarm boxes. Luckily I have an unfinished bathroom in the basement and I was able to attach it to the smoke detector line in there.

E
Eric Walter
WORKS PERFECT WITH MY FIRST ALERT

This an innovative and useful solution for my old school First Alert smoke/co sensors. It makes them smart and seamlessly adding to my existing z-wave network.

D
Dima
Using this to reflect status of wired smoke detectors in Home Assistant

This kit is a quick way to be able to get status of existing pre-wired smoke detectors in your smart home hub. In my case, using this to reflect the status of existing smoke detectors to be able to trigger automations when the siren goes off.

P
Peter
I have a similar kit and it works great

I use the ZEN51 in conjunction with the First Alert smoke alarm relay (RM4) which is essentially the same as the Kidde but for First Alert (wired) smoke detectors. I used to have the RM4 attached to the contacts of an Ecolink door sensor, but I like the ZEN51 better because (a) it's cheaper, (b) it fits inside the smoke detector box, (c) it can use the AC power already in said box, so (d) it acts as a repeater in my Z-wave mesh. I use Home Assistant which makes it easy to create a binary_sensor template (device_class "smoke") based on the state of the switch, which in turn I can see in Apple Home as a smoke alarm for alerts on my phone when I'm away. It's important to note that the switch in the relay is effectively "read-only" — If you turn it on, it does not trigger the smoke detectors in the house, it just turns itself on and off when the detectors "fire". Incidentally I submitted a service ticket detailing my setup and a few weeks later this kit showed up here, so I'm guessing I gave Zooz this idea? Enjoy!