[Alexa, Thermostat] Voice feedback after setting the target temperature provides a rounded value

[Gaspode69]

Describe the bug
When I use the ioBroker iot skill to set the target temperature of a heating thermostat and choose a non-integer value (e.g., 20.5°C), the target temperature is correctly set. However, the voice feedback from Alexa says "Automatischer Modus ist auf 21 Grad gestellt" instead of providing the expected temperature value 20.5. The value is rounded.

To Reproduce
Steps to reproduce the behavior:

1. Use a state with role level.temperature to create an Alexa device in the iot adapter with type THERMOSTAT and include it into the group of an Echo device
2. Say "Alexa, setze die Temperatur auf 20,5 Grad" to this Echo device
3. Temperature is set to 20,5 degrees, but voice feedback ist "Automatischer Modus ist auf 21 Grad gestellt."

Expected behavior
Voice feedback should be "Automatischer Modus ist auf 20,5 Grad gestellt."

Screenshots & Logfiles
Logfile:

2024-12-05 08:20:56.339 - debug: iot.0 (15224) Data: "{\"header\":{\"messageId\":\"xxxxxxxx-xxxx-xxxxxxxxx-xxxxxxxxxxxx\",\"namespace\":\"Alexa.ConnectedHome.Control\",\"name\":\"SetTargetTemperatureRequest\",\"payloadVersion\":\"2\"},\"payload\":{\"accessToken\":\"##########\",\"appliance\":{\"applianceId\":\"Wandthermostat_B_ro_SET_TEMPERATURE\",\"additionalApplianceDetails\":{\"friendlyNames\":\"Wandthermostat Büro SET TEMPERATURE\",\"id\":\"hm-rpc.0.OEQXXXXXXX.2.SET_TEMPERATURE\",\"role\":\"level.temperature\"}},\"targetTemperature\":{\"value\":20.5}}}"
2024-12-05 08:20:56.339 - debug: iot.0 (15224) 999999999999 ALEXA: {"header":{"messageId":"xxxxxxxx-xxxx-xxxxxxxxx-xxxxxxxxxxxx","namespace":"Alexa.ConnectedHome.Control","name":"SetTargetTemperatureRequest","payloadVersion":"2"},"payload":{"accessToken":"##########","appliance":{"applianceId":"Wandthermostat_B_ro_SET_TEMPERATURE","additionalApplianceDetails":{"friendlyNames":"Wandthermostat Büro SET TEMPERATURE","id":"hm-rpc.0.OEQXXXXXXX.2.SET_TEMPERATURE","role":"level.temperature"}},"targetTemperature":{"value":20.5}}}
2024-12-05 08:20:56.340 - debug: iot.0 (15224) [ALEXA] New Request: SetTargetTemperatureRequest
2024-12-05 08:20:56.340 - debug: iot.0 (15224) [ALEXA] ALEXA temperature Percent: Wandthermostat_B_ro_SET_TEMPERATURE 20.5 grad
2024-12-05 08:20:56.340 - debug: iot.0 (15224) [ALEXA] Controlling temperature: hm-rpc.0.OEQXXXXXXX.2.SET_TEMPERATURE
2024-12-05 08:20:56.349 - debug: iot.0 (15224) [REMOTE] Send response to 'response/alexa_XXXXXXX_de/alexa: {"payload":{"targetTemperature":{"value":20.5},"temperatureMode":{"value":"AUTO"},"previousState":{"targetTemperature":{"value":20.5},"mode":{"value":"AUTO"}}},"header":{"messageId":"xxxxxxxx-xxxx-xxxxxxxxx-xxxxxxxxxxxx","namespace":"Alexa.ConnectedHome.Control","name":"SetTargetTemperatureConfirmation","payloadVersion":"2"}}

state:

  "type": "state",
  "common": {
    "name": "Wandthermostat Büro.SET_TEMPERATURE",
    "def": 20,
    "type": "number",
    "read": true,
    "write": true,
    "min": 4.5,
    "max": 30.5,
    "unit": "°C",
    "role": "level.temperature",
    "smartName": {
      "de": "Wandthermostat Büro SET TEMPERATURE",
      "smartType": "THERMOSTAT"
    }
  },
  "native": {
    "CONTROL": "HEATING_CONTROL.SETPOINT",
    "DEFAULT": 20,
    "FLAGS": 1,
    "ID": "SET_TEMPERATURE",
    "MAX": 30.5,
    "MIN": 4.5,
    "OPERATIONS": 7,
    "TAB_ORDER": 8,
    "TYPE": "FLOAT",
    "UNIT": "°C"
  },
  "_id": "hm-rpc.0.OEQXXXXXXX.2.SET_TEMPERATURE",
  "acl": {
    "object": 1636,
    "state": 1636,
    "owner": "system.user.admin",
    "ownerGroup": "system.group.administrator"
  },
  "from": "system.adapter.admin.0",
  "user": "system.user.admin",
  "ts": 1733385848295
}

iot Alexa device:

Versions:

• Adapter version: 3.3.0
• JS-Controller version: 6.0.11
• Node version: 20.18.1
• Operating system: Windows

Additional context
@foxriver76
I might be wrong, but the logs seem to suggest that the issue originates from the Alexa Skill. The adapter's debug log shows the correct value everywhere, and the voice feedback appears to come directly from the Skill.

[GermanBluefox]

I hardly guess, that this is feature of Alexa Speaker and not of ioBroker.iot adapter.