SONOFF Coolcam Siren not working anymore with Tasmota 15.2.0 (frequently reboots)

[helmar74]

PROBLEM DESCRIPTION

I have updated my SONOFF Coolcam Siren to Tasmota v 15.2.0
https://templates.blakadder.com/neo_coolcam_NAS-AB02W.html
After the upgrade the siren isn't working anymore.
Temperature and Humidity in the webinterface isn't shown anymore and it has frequently reboots with this error shown in weblog:

00:00:00.001 HDW: ESP8266EX
00:00:00.032 CFG: aus Flash geladen von FA, Anzahl 908
00:00:00.091 SNS: Hardware Serial
00:00:00.126 Projekt sonoffStandard - Sirene 1 Version 15.2.0(tasmota)-2.7.8(2025.12.12 19:26:38)
00:00:04.001 WIF: verbinden mit AP1 hs.net_EG Channel 6 BSSId 0C:72:74:C5:AB:12 in Modus 11n als Sirene1...
00:00:06.485 WIF: verbunden
00:00:06.737 HTP: Web server active on Sirene1 with IP address 192.168.1.196
11:24:26.419 MQT: Verbindungsversuch…
11:24:26.433 MQT: verbunden
11:24:26.435 MQT: tele/tasmotasirene1/LWT = Online (beibehalten)
11:24:26.437 MQT: cmnd/tasmotasirene1/POWER = 
11:24:26.440 MQT: tele/tasmotasirene1/INFO1 = {"Info1":{"Module":"Tuya MCU","Version":"15.2.0(tasmota)","FallbackTopic":"cmnd/tasmotasirene1_fb/","GroupTopic":"cmnd/sonoffStandardGruppe/"}}
11:24:26.441 MQT: tele/tasmotasirene1/INFO2 = {"Info2":{"WebServerMode":"Admin","Hostname":"Sirene1","IPAddress":"192.168.1.196"}}
11:24:26.444 MQT: tele/tasmotasirene1/INFO3 = {"Info3":{"RestartReason":{"Exception":28,"Reason":"Exception","EPC":["40238e37","00000000","00000000"],"EXCVADDR":"0064474c","DEPC":"00000000","CallChain":["40238efa","4023902b","4022a013","4022c3e3","4023eadc","4023eb94","40100ec4","4024d9dc","40102321"]},"BootCount":432}}
11:24:26.445 MQT: stat/tasmotasirene1/RESULT = {"POWER":"OFF"}
11:24:26.446 MQT: stat/tasmotasirene1/POWER = OFF
11:24:26.506 TYA: MCU Product ID: {"p":"ymf4oruxqx0xlogp","v":"1.0.3","m":0}
11:24:31.302 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T11:24:31","Uptime":"0T00:00:14","UptimeSec":14,"Vcc":3.523,"Heap":25,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":96,"Signal":-52,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
11:24:31.306 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T11:24:31","TuyaSNS":{"Temperature":null,"Humidity":null,"Timer1":null},"TempUnit":"C"}
11:29:31.342 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T11:29:31","Uptime":"0T00:05:14","UptimeSec":314,"Vcc":3.523,"Heap":24,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":96,"Signal":-52,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
11:29:31.346 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T11:29:31","TuyaSNS":{"Temperature":null,"Humidity":null,"Timer1":null},"TempUnit":"C"}
11:34:31.342 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T11:34:31","Uptime":"0T00:10:14","UptimeSec":614,"Vcc":3.526,"Heap":24,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":96,"Signal":-52,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
11:34:31.347 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T11:34:31","TuyaSNS":{"Temperature":null,"Humidity":null,"Timer1":null},"TempUnit":"C"}
11:39:31.337 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T11:39:31","Uptime":"0T00:15:14","UptimeSec":914,"Vcc":3.524,"Heap":24,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":94,"Signal":-53,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
11:39:31.342 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T11:39:31","TuyaSNS":{"Temperature":null,"Humidity":null,"Timer1":null},"TempUnit":"C"}

If I revert back to version 15.1.0 it is working without any issue (temperature and humditiy is shown, no reboots after exception:

10:58:37.329 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T10:58:37","TuyaSNS":{"Temperature":22.6,"Humidity":38,"Timer1":null},"TempUnit":"C"}
11:01:50.318 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Temperature":22.7}}
11:01:50.329 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:01:52.018 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":38}}
11:01:57.045 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:01:58.732 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":38}}
11:03:37.355 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T11:03:37","Uptime":"0T01:50:14","UptimeSec":6614,"Vcc":3.524,"Heap":24,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":96,"Signal":-52,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
11:03:37.359 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T11:03:37","TuyaSNS":{"Temperature":22.7,"Humidity":38,"Timer1":null},"TempUnit":"C"}
11:05:57.562 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Temperature":22.8}}
11:05:57.575 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:05:59.271 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":38}}
11:06:00.957 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:06:02.642 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":38}}
11:06:14.347 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Temperature":22.7}}
11:06:14.358 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:06:16.043 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Temperature":22.8}}
11:06:16.058 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":38}}
11:06:21.093 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Temperature":22.7}}
11:06:21.103 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:06:22.792 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Temperature":22.8}}
11:06:22.803 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":38}}
11:06:27.845 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:06:29.530 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":38}}
11:06:34.557 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:06:41.248 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":38}}
11:06:54.648 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:06:56.332 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":38}}
11:06:58.017 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:07:04.716 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":38}}
11:07:06.401 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:07:56.511 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":38}}
11:08:29.942 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:08:31.627 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":38}}
11:08:33.318 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":37}}
11:08:37.326 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T11:08:37","Uptime":"0T01:55:14","UptimeSec":6914,"Vcc":3.528,"Heap":24,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":96,"Signal":-52,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
11:08:37.333 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T11:08:37","TuyaSNS":{"Temperature":22.8,"Humidity":37,"Timer1":null},"TempUnit":"C"}
11:08:42.023 CMD: setoption65
11:08:42.027 MQT: stat/tasmotasirene1/RESULT = {"SetOption65":"ON"}
11:08:46.119 CMD: setoption66
11:08:46.123 MQT: stat/tasmotasirene1/RESULT = {"SetOption66":"OFF"}
11:09:42.981 CMD: module
11:09:42.985 MQT: stat/tasmotasirene1/RESULT = {"Module":{"54":"Tuya MCU"}}
11:11:35.943 CMD: teleperiod
11:11:35.948 MQT: stat/tasmotasirene1/RESULT = {"TelePeriod":300}
11:11:36.317 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T11:11:36","Uptime":"0T01:58:13","UptimeSec":7093,"Vcc":3.524,"Heap":24,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":20,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":98,"Signal":-51,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
11:11:36.322 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T11:11:36","TuyaSNS":{"Temperature":22.8,"Humidity":37,"Timer1":null},"TempUnit":"C"}

REQUESTED INFORMATION

Make sure your have performed every step and checked the applicable boxes before submitting your issue. Thank you!

• Read the Contributing Guide and Policy and the Code of Conduct
• [X ] Searched the problem in issues
• Searched the problem in discussions
• Searched the problem in the docs
• Searched the problem in the chat
• Problem is not scripter related, in this case open a discussion and tag gemu2015
• Device used (e.g., Sonoff Basic): SONOFF Coolcam Siren
• Tasmota binary firmware version number used: 15.2.0
  • Pre-compiled
  • Self-compiled
• Flashing tools used: VSC
• Provide the output of command: Backlog Template; Module; GPIO 255:

  Configuration output here:

• If using rules, provide the output of this command: Backlog Rule1; Rule2; Rule3:

  Rules output here:

• Provide the output of this command: Status 0:

  STATUS 0 output here:

• Set weblog to 4 and then, when you experience your issue, provide the output of the Console log:

  Console output here:

TO REPRODUCE

Update the SONOFF Coolcam Siren from Tasmota 15.1.0 to 15.2.0

EXPECTED BEHAVIOUR

Should work with 15.2.0 as it was with 15.1.0

SCREENSHOTS

If applicable, add screenshots to help explain your problem.

ADDITIONAL CONTEXT

Add any other context about the problem here.

(Please, remember to close the issue when the problem has been addressed)

[arendst]

As a workaround try to change all logging to max level 2

I think I see where the culprit is. Just need to test it ....

[helmar74]

OK;

all Loglevels are < 2, issue still exists

13:31:44.075 MQT: stat/tasmotasirene1/RESULT = {"MqttLog":0}
13:31:49.781 CMD: weblog
13:31:49.785 MQT: stat/tasmotasirene1/RESULT = {"WebLog":2}
13:32:02.800 CMD: seriallog
13:32:02.804 MQT: stat/tasmotasirene1/RESULT = {"SerialLog":{"0":{"Active":"0"}}}
13:32:08.868 CMD: syslog
13:32:08.872 MQT: stat/tasmotasirene1/RESULT = {"SysLog":{"0":{"Active":"0"}}}

[arendst]

The exception 28 reports a TuyaSerialInput problem. I cannot see changes in this part of Tasmota between 15.1.0 and 15.2.0.

Pls replace the attached file from 15.1.0 and see if this solves the issue.

xdrv_16_tuyamcu_v1.zip

Before you start can you provide a log from a user initiated restart until after the error occurs?

[arendst]

Oh wait. The file won't compile with 15.2.0. Let me change it now ...

[helmar74]

The exception 28 reports a TuyaSerialInput problem. I cannot see changes in this part of Tasmota between 15.1.0 and 15.2.0.

Pls replace the attached file from 15.1.0 and see if this solves the issue.

xdrv_16_tuyamcu_v1.zip

Before you start can you provide a log from a user initiated restart until after the error occurs?
Hi sure, here's the log of a user initiated restart:

00:00:00.001 HDW: ESP8266EX
00:00:00.033 CFG: aus Flash geladen von F8, Anzahl 919
00:00:00.091 SNS: Hardware Serial
00:00:00.126 Projekt sonoffStandard - Sirene 1 Version 15.2.0(tasmota)-2.7.8(2025.12.12 19:26:38)
00:00:04.001 WIF: verbinden mit AP1 hs.net_EG Channel 6 BSSId 0C:72:74:C5:AB:12 in Modus 11n als Sirene1...
00:00:06.528 WIF: verbunden
00:00:06.779 HTP: Web server active on Sirene1 with IP address 192.168.1.196
14:32:51.468 MQT: Verbindungsversuch…
14:32:51.673 MQT: verbunden
14:32:51.675 MQT: tele/tasmotasirene1/LWT = Online (beibehalten)
14:32:51.676 MQT: cmnd/tasmotasirene1/POWER = 
14:32:51.680 MQT: tele/tasmotasirene1/INFO1 = {"Info1":{"Module":"Tuya MCU","Version":"15.2.0(tasmota)","FallbackTopic":"cmnd/tasmotasirene1_fb/","GroupTopic":"cmnd/sonoffStandardGruppe/"}}
14:32:51.681 MQT: tele/tasmotasirene1/INFO2 = {"Info2":{"WebServerMode":"Admin","Hostname":"Sirene1","IPAddress":"192.168.1.196"}}
14:32:51.684 MQT: tele/tasmotasirene1/INFO3 = {"Info3":{"RestartReason":{"Exception":28,"Reason":"Exception","EPC":["40238e37","00000000","00000000"],"EXCVADDR":"00234644","DEPC":"00000000","CallChain":["40238efa","4023902b","4022a013","4022c3e3","4023eadc","4023eb94","40100ec4","4024d9dc","40102321"]},"BootCount":439}}
14:32:51.685 MQT: stat/tasmotasirene1/RESULT = {"POWER":"OFF"}
14:32:51.685 MQT: stat/tasmotasirene1/POWER = OFF
14:32:52.054 TYA: MCU Product ID: {"p":"ymf4oruxqx0xlogp","v":"1.0.3","m":0}
14:32:56.282 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T14:32:56","Uptime":"0T00:00:14","UptimeSec":14,"Vcc":3.526,"Heap":25,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":22,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":94,"Signal":-53,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
14:32:56.286 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T14:32:56","TuyaSNS":{"Temperature":null,"Humidity":null,"Timer1":null},"TempUnit":"C"}

[arendst]

Thx. Pls try attached file.

xdrv_16_tuyamcu_v1.zip

[helmar74]

I was able to compile and I updated the device.
I'll wait for a few minutes, if the reboots are coming back.

Here's again a user initiated reboot log:

00:00:00.001 HDW: ESP8266EX
00:00:00.033 CFG: aus Flash geladen von FA, Anzahl 924
00:00:00.092 SNS: Hardware Serial
00:00:00.127 Projekt sonoffStandard - Sirene 1 Version 15.2.0(tasmota)-2.7.8(2025.12.14 14:43:49)
00:00:04.001 WIF: verbinden mit AP1 hs.net_EG Channel 6 BSSId 0C:72:74:C5:AB:12 in Modus 11n als Sirene1...
00:00:06.480 WIF: verbunden
00:00:06.732 HTP: Web server active on Sirene1 with IP address 192.168.1.196
14:48:14.469 MQT: Verbindungsversuch…
14:48:14.479 MQT: verbunden
14:48:14.481 MQT: tele/tasmotasirene1/LWT = Online (beibehalten)
14:48:14.482 MQT: cmnd/tasmotasirene1/POWER = 
14:48:14.486 MQT: tele/tasmotasirene1/INFO1 = {"Info1":{"Module":"Tuya MCU","Version":"15.2.0(tasmota)","FallbackTopic":"cmnd/tasmotasirene1_fb/","GroupTopic":"cmnd/sonoffStandardGruppe/"}}
14:48:14.487 MQT: tele/tasmotasirene1/INFO2 = {"Info2":{"WebServerMode":"Admin","Hostname":"Sirene1","IPAddress":"192.168.1.196"}}
14:48:14.488 MQT: tele/tasmotasirene1/INFO3 = {"Info3":{"RestartReason":"Software/System restart","BootCount":442}}
14:48:14.489 MQT: stat/tasmotasirene1/RESULT = {"POWER":"OFF"}
14:48:14.490 MQT: stat/tasmotasirene1/POWER = OFF
14:48:14.550 TYA: MCU Product ID: {"p":"ymf4oruxqx0xlogp","v":"1.0.3","m":0}
14:48:19.315 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T14:48:19","Uptime":"0T00:00:14","UptimeSec":14,"Vcc":3.523,"Heap":25,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":27,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":96,"Signal":-52,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
14:48:19.318 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T14:48:19","TuyaSNS":{"Temperature":null,"Humidity":null,"Timer1":null},"TempUnit":"C"}

for the moment, temperature and humiditiy is still "null"

[helmar74]

I think it look's good now. Now unplanned reboot since 26 minutes:

00:00:00.001 HDW: ESP8266EX
00:00:00.033 CFG: aus Flash geladen von FA, Anzahl 924
00:00:00.092 SNS: Hardware Serial
00:00:00.127 Projekt sonoffStandard - Sirene 1 Version 15.2.0(tasmota)-2.7.8(2025.12.14 14:43:49)
00:00:04.001 WIF: verbinden mit AP1 hs.net_EG Channel 6 BSSId 0C:72:74:C5:AB:12 in Modus 11n als Sirene1...
00:00:06.480 WIF: verbunden
00:00:06.732 HTP: Web server active on Sirene1 with IP address 192.168.1.196
14:48:14.469 MQT: Verbindungsversuch…
14:48:14.479 MQT: verbunden
14:48:14.481 MQT: tele/tasmotasirene1/LWT = Online (beibehalten)
14:48:14.482 MQT: cmnd/tasmotasirene1/POWER = 
14:48:14.486 MQT: tele/tasmotasirene1/INFO1 = {"Info1":{"Module":"Tuya MCU","Version":"15.2.0(tasmota)","FallbackTopic":"cmnd/tasmotasirene1_fb/","GroupTopic":"cmnd/sonoffStandardGruppe/"}}
14:48:14.487 MQT: tele/tasmotasirene1/INFO2 = {"Info2":{"WebServerMode":"Admin","Hostname":"Sirene1","IPAddress":"192.168.1.196"}}
14:48:14.488 MQT: tele/tasmotasirene1/INFO3 = {"Info3":{"RestartReason":"Software/System restart","BootCount":442}}
14:48:14.489 MQT: stat/tasmotasirene1/RESULT = {"POWER":"OFF"}
14:48:14.490 MQT: stat/tasmotasirene1/POWER = OFF
14:48:14.550 TYA: MCU Product ID: {"p":"ymf4oruxqx0xlogp","v":"1.0.3","m":0}
14:48:19.315 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T14:48:19","Uptime":"0T00:00:14","UptimeSec":14,"Vcc":3.523,"Heap":25,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":27,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":96,"Signal":-52,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
14:48:19.318 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T14:48:19","TuyaSNS":{"Temperature":null,"Humidity":null,"Timer1":null},"TempUnit":"C"}
14:49:02.035 CMD: tuyamcu
14:49:02.040 MQT: stat/tasmotasirene1/RESULT = {"TuyaMCU":[{"fnId":11,"dpId":104},{"fnId":71,"dpId":105},{"fnId":73,"dpId":106},{"fnId":81,"dpId":103},{"fnId":61,"dpId":102},{"fnId":62,"dpId":116}]}
14:49:44.025 CMD: teleperiod
14:49:44.030 MQT: stat/tasmotasirene1/RESULT = {"TelePeriod":300}
14:49:44.304 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T14:49:44","Uptime":"0T00:01:39","UptimeSec":99,"Vcc":3.542,"Heap":21,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":24,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":96,"Signal":-52,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
14:49:44.308 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T14:49:44","TuyaSNS":{"Temperature":null,"Humidity":null,"Timer1":null},"TempUnit":"C"}
14:54:44.316 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T14:54:44","Uptime":"0T00:06:39","UptimeSec":399,"Vcc":3.524,"Heap":21,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":96,"Signal":-52,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
14:54:44.319 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T14:54:44","TuyaSNS":{"Temperature":null,"Humidity":null,"Timer1":null},"TempUnit":"C"}
14:59:44.320 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T14:59:44","Uptime":"0T00:11:39","UptimeSec":699,"Vcc":3.526,"Heap":21,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":96,"Signal":-52,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
14:59:44.324 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T14:59:44","TuyaSNS":{"Temperature":null,"Humidity":null,"Timer1":null},"TempUnit":"C"}
15:01:59.946 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Temperature":24.5}}
15:01:59.960 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":33}}
15:04:44.300 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T15:04:44","Uptime":"0T00:16:39","UptimeSec":999,"Vcc":3.523,"Heap":21,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":96,"Signal":-52,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
15:04:44.304 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T15:04:44","TuyaSNS":{"Temperature":24.5,"Humidity":33,"Timer1":null},"TempUnit":"C"}
15:09:44.304 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T15:09:44","Uptime":"0T00:21:39","UptimeSec":1299,"Vcc":3.522,"Heap":20,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":98,"Signal":-51,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
15:09:44.308 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T15:09:44","TuyaSNS":{"Temperature":24.5,"Humidity":33,"Timer1":null},"TempUnit":"C"}
15:10:49.254 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Temperature":24.6}}
15:10:49.268 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":34}}
15:10:55.970 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":33}}
15:10:59.322 MQT: tele/tasmotasirene1/SENSOR = {"TuyaSNS":{"Humidity":34}}
15:14:44.316 MQT: tele/tasmotasirene1/STATE = {"Time":"2025-12-14T15:14:44","Uptime":"0T00:26:39","UptimeSec":1599,"Vcc":3.522,"Heap":21,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER":"OFF","Wifi":{"AP":1,"SSId":"hs.net_EG","BSSId":"0C:72:74:C5:AB:12","Channel":6,"Mode":"11n","RSSI":98,"Signal":-51,"LinkCount":1,"Downtime":"0T00:00:08"},"Hostname":"Sirene1","IPAddress":"192.168.1.196"}
15:14:44.320 MQT: tele/tasmotasirene1/SENSOR = {"Time":"2025-12-14T15:14:44","TuyaSNS":{"Temperature":24.6,"Humidity":34,"Timer1":null},"TempUnit":"C"}

[arendst]

OK. The issue is caused by PR #24063

What worked for him doesn't work for you.

I have to find a way around this.

For now I remove the PR from v15.2.0.1 so you may close this issue.