# Function node to manually activate aqara smoke alarm buzzer
**URL:** https://discourse.nodered.org/t/function-node-to-manually-activate-aqara-smoke-alarm-buzzer/98098
**Category:** General
**Tags:** function-node
**Created:** [12 July 2025 12:13 UTC](https://discourse.nodered.org/t/function-node-to-manually-activate-aqara-smoke-alarm-buzzer/98098 "2025-07-12T12:13:51Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@thomasvjohansen](https://discourse.nodered.org/u/thomasvjohansen)
#### Post date: [12 July 2025 12:13 UTC](https://discourse.nodered.org/t/function-node-to-manually-activate-aqara-smoke-alarm-buzzer/98098/1 "2025-07-12T12:13:51Z")
I have an Aqara smoke alarm where I want to use the buzzer as a siren for my alarm.
It should be possible to activate the buzzer manually,
> To write (`/set`) a value publish a message to topic `zigbee2mqtt/FRIENDLY_NAME/set` with payload `{"buzzer": NEW_VALUE}`. The possible values are: `mute`, `alarm`
I need to do this with a function but cant figure out how to get this working.
I thought it was as simple as adding this in function node:
> msg.payload = {"buzzer": alarm}
> return msg;
and then send it to a mqtt exit node which have a zigbee2mqtt/FRIENDLY\_NAME/set topic.
but somehow that doesnt work.
What am I doing wrong?
> **[Aqara JY-GZ-01AQ control via MQTT | Zigbee2MQTT](https://www.zigbee2mqtt.io/devices/JY-GZ-01AQ.html)**
>
> Integrate your Aqara JY-GZ-01AQ via Zigbee2MQTT with whatever smart home infrastructure you are using without the vendor's bridge or gateway.
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### Author:  [@thomasvjohansen](https://discourse.nodered.org/u/thomasvjohansen)
#### Post date: [12 July 2025 12:28 UTC](https://discourse.nodered.org/t/function-node-to-manually-activate-aqara-smoke-alarm-buzzer/98098/2 "2025-07-12T12:28:03Z")
figured it out
needed ' '
> msg.payload = {"buzzer": 'alarm'}
> return msg;
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [12 July 2025 14:18 UTC](https://discourse.nodered.org/t/function-node-to-manually-activate-aqara-smoke-alarm-buzzer/98098/3 "2025-07-12T14:18:33Z")
> [@thomasvjohansen](#):
>
> I need to do this with a function
Why don't you use a Change node instead of a Function?
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### Author:  [@thomasvjohansen](https://discourse.nodered.org/u/thomasvjohansen)
#### Post date: [16 July 2025 18:09 UTC](https://discourse.nodered.org/t/function-node-to-manually-activate-aqara-smoke-alarm-buzzer/98098/4 "2025-07-16T18:09:32Z")
I'm using bit of boths.
But my functions are simple, since I'm no good a programming.
But got a working alarm system up and running:
main remotes and notifications
Smoke detectors & using them for alarm sirens too
motion
door
Dashboard (danish)
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [30 July 2025 18:09 UTC](https://discourse.nodered.org/t/function-node-to-manually-activate-aqara-smoke-alarm-buzzer/98098/5 "2025-07-30T18:09:56Z")
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