Recommended smoke detectors - reliability, no false alarms, battery life?

Hardware
#1

For our family house and for the house of my mom I would like to change from traditional 433 smoke detectors to Zigbee. Right now I have almost nothing, just a Raspi with Home Assistant on it. I would mount approx 30 smoke detectors, some water leakage detectors and of course a number of repeaters to get them all connected.

When searching for “Zigbee Smoke Detector” I came across those four models:

  1. https://de.aliexpress.com/item/1005004101962864.html
  2. https://de.aliexpress.com/item/1005004280661326.html

So: Any recommendations which one to use? One of those or any other? They should be approx the same price range.

Ideally I would be able to recharge them via USB but it seems like they all need batteries, so I would like the battery to last as long as possible.

#2

And here the other two models
3. https://de.aliexpress.com/item/1005004937900515.html
4. https://de.aliexpress.com/item/1005004854878650.html

#3

I also want to know this.

#4

Aren’t there any European products? I believe they must be somehow certified in order to be accepted as the necessary sensors you are required to install in new homes.

I’m soon-ish moving into a new flat, so I’m already planning it home assistant wise, but I’m also not really far on fire alarms.

They would be nice to use as alarms as well.

#5

Having a look here
https://www.zigbee2mqtt.io/devices/TS0601_smoke.html
and here
https://www.zigbee2mqtt.io/devices/JTYJ-GD-01LM_BW.html
there are quite some differences which values they expose.

So this is bringing me to the next point: How do I get them really connected so that
IF one-sensor-detects-smoke THEN all-sensors-give-alarm
?
What I understood is: Home Assistant could trigger any function is one sensor detects smoke. But what does it trigger then? Are there any smoke detectors where the siren can be triggered from outside?

#6

Seems like those sensors
https://www.zigbee2mqtt.io/devices/SMSZB-120.html
https://www.zigbee2mqtt.io/devices/SA12IZL.html
https://www.zigbee2mqtt.io/devices/R7049.html
https://www.zigbee2mqtt.io/devices/JY-GZ-01AQ.html
can be used both as sensor and as a siren, correct?

#7

I’m using 2 HEIMAN Zigbee Smoke detectors on conbee II which work pretty well

#8

Do the Heiman sensors habe the option to use them as a siren? So detector #1 detects smoke, Home Assistant tells ALL sensors to make alarm?

#9

I never tried this. Also not available in service siren.
On deconz, I see 2 clusters IAS WD to possibly sent a warning , siren or strobe and IAS Zone to define zone where I guess you can group sensors in the same. I don’t see those clusters translated into HA.

I use others methods like Google assistant, lights and smartphone notification
link to product (not taken from that store but same picture): https://www.aliexpress.com/item/4000136474999.html

#10

Alternative to zigbee is to use standard linked detectors with a central relay control for monitoring:

Works well for me.

I notice Shelly have just launched wifi smoke alarms as well…

#11

SA12IZL: It is AC powered, lacking router functionality. Not useful.
SMSZB-120: Seems to be sold as " frient Intelligent Smoke Sensor Zigbee" for 40.- € including the standard CR123 battery
R7049: Discontinued
JY-GZ-01AQ: Sold here https://de.aliexpress.com/item/1005004385184651.html excluding the expensive CR17450 battery