Smoke detectors

Hardware
1

Hi,
I am looking to replace my old mains wired smoke detectors with:

  1. smart mains wired smoke detectors
  2. good integration with HA.
    Any recommendations?
    Thanks
2

An option to look at is staying with the dumb smoke detectors but get a listener to relay that info to HA.
I personally use the Ecolink Firefighter Z-wave but there are other options.

3

A great option as mentioned is getting relays and you can keep your “up to code” smoke/co2 detectors. You would want the CO relay and smoke relay for the brand you have. These are the kidde ones

then you need to use those relays to trigger a dry contact relay. This can be achieved many ways. An option is using an ESP, or you can use something like this

These are then easily added to HA

Note:
Some places the Nest detectors etc don’t meet electrical code.

  1. uses wireless, not wire to communicate
  2. has no strobe light
4

These clearly have an API - would be great to have an integration in HA for these. Anyone know if one is in the works?

https://www.kidde.com/home-safety/en/us/products/kidde-smoke-carbon-monoxide-alarm-with-smart-features/

5

I have both Kidde relays (linked above) hooked up to an ESP and it works amazingly. Highly recommend it.

1 Like
6

Hi
I’m looking to do the same with a SM120X. Can you please provide some more details on just what you did? Any diagrams or pics.

Thanks.
5310

7

Can you silence the alarms using home assistant with this setup?

8

What does ESP stand for?

Looking for a zigbee sensor to integrate the smoke relay to HA.

9

is the signal output from the relay 9V problematic for and esp?

10

Seems like the relays / interconnection signal wires is 9V. Do these contact sensors support 9V I too would prefer zigbee as I dont want to get another hub/dongle just for this.

11

Not sure this applies to your automation. I contacted Kidde to understand how to verify that the CO120 and SM120 work properly. BTW, I am connecting the Normally Open leads to Shelly1s, then using the state change to fire off my particular automation that does things like shut down HVAC, lights on, doors open for fire dept, text messaging and so forth. Here is the instruction provided to me by Kidde:
"To test the relays, connect the relay to the smoke detectors with the red/white/black wires, leaving the blue/yellow/orange disconnected. (The grey wire will also be disconnected, but is not involved with this wiring setup.) Make sure that the AC power is turned on when then wiring is complete.

Test for continuity between the blue/yellow and blue/orange wires. Blue/yellow should have almost zero resistance, while blue/orange should be infinite. Have someone press the button on one of the detectors to run the test mode. During the portion of the test sequence corresponding to the relay that you’re testing (smoke for SM120X or carbon monoxide for CO120X), these two conditions should switch state, so the blue/yellow will now be open (infinite resistance) and the blue/orange will be almost zero. Once the test mode is complete, the relay will then revert to the default states.

If the relay behaves in this manner, then it is working properly and wired correctly.

If you have any further questions or concerns, please reply to this email or feel free to contact Kidde Product Support (Mon-Fri 8am - 9pm EST, Sat 9am-5pm EST) at 1-800-880-6788. We will be happy to further assist you.