SONOFF SNZB-02D/DR2: Support for "Remote Temperature Display"

[lupetril]

I am using the SONOFF SNZB-02DR2 (and SNZB-02D) with a ZBT-2 (SkyConnect) coordinator on Home Assistant via Zigbee2MQTT.
The device works perfectly for reporting local temperature and humidity, but it lacks the "Remote Temperature Display" feature which is officially supported when using the Sonoff proprietary Zigbee Bridge Pro.

Currently, the exposes section for this device (as seen here: https://www.zigbee2mqtt.io/devices/SNZB-02DR2.html) does not include any writable attribute to push external temperature data to the display.

I would like to be able to send a temperature value from another sensor (in my case, a SONOFF SNZB-02WD) to be shown on the SNZB-02DR2 display.
This would likely require identifying the manufacturer-specific cluster/attribute that Sonoff uses to "mirror" or "push" remote data to the LCD.

I've checked the Dev Console in Zigbee2MQTT to find writable attributes, but without knowing the specific cluster/PIID used by Sonoff for this "Remote Display" function, it is impossible to manually update the screen.

Has anyone successfully identified the cluster/attribute for this feature or is there an external converter in development to enable this?
Thanks

[andrei-lazarov]

Hi, I've seen this question before, but I cannot find it.
SONOFF is contributing to Z2M, have you asked them about this feature?

[lupetril]

Yes, I have already sent a request directly to SONOFF asking for the specific Zigbee cluster and attribute details needed to implement this feature. I'm waiting for their response, hopefully they'll provide the technical information. If they do, I'll share it here. Luigi Il ven 20 feb 2026, 23:05 Andrei LAZAROV ***@***.***> ha scritto:

…

Hi, I've seen this question before, but I cannot find it. SONOFF is contributing to Z2M, have you asked them about this feature? — Reply to this email directly, view it on GitHub <#31115 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AG7G2GMWNQPENWVYY4HR3LL4M6AL7AVCNFSM6AAAAACVXB6M6WVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKOBXGY3DKNA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[yu-tendo]

#30962

[lupetril]

Thanks

[lsroka76]

Sonoff custom cluster (0xFC11)
external temperature 0x600D S16
external humidity 0x6018 U16

[trojanc]

I think the temp should maybe be INT16?

I could send this using dev tools

Humidity

{
  "write": {
    "cluster": 64529,
    "payload": {
      "24600": { "value": 12, "type": 33 }
    }
  }
}

Temperature

{
  "write": {
    "cluster": 64529,
    "payload": {
      "24589": { "value": 12, "type": 41 }
    }
  }

}

It looks like you have to time it right, by waiting for the device to send an update, or just press the button at the back of it to force it to send an update. It looks like the messages are delivered when looking at the websocket traffic

{"topic":"Temperature Office/set","payload":{"write":{"cluster":64529,"payload":{"24589":{"value":12,"type":41}}}}}
{"payload":{"level":"info","message":"zhc:tz: Wrote '{\"24589\":{\"type\":41,\"value\":12}}' to '64529'"},"topic":"bridge/logging"}

The screen on the SNZB-02DR2 still doesn't show anything... So maybe there is something still missing... Or my values aren't good enough...

(I didn't backup my firmware of my bridge so I can't go back to Sonoff ewelink setup anymore to try and help debug this with wireshark...)

[lsroka76]

S16 = INT16
Temperature should be in format TEMPx100
Humidity should be in format HUMIx100

[trojanc]

Has anyone managed to get this values to display on the device? If you have can you give some steps to reproduce, and maybe some detail of your setup...?