Mario Rasch
I found the issue https://github.com/joeyhage/homebridge-alexa-smarthome/issues/200 on GitHub and I'm experiencing the same problem with my WIZ TV Backlight RGB light strip.
In addition to the error message in the logs it looks like a follow-up problem could be that HomeKit complains about the light strip as being non-responsive - although I can switch it on and off and change color & brightness in HomeKit.
Debug log looks like below.
I guess problem is that "colorTemperatureInKelvinStateValue" has a null value.
While I therefore think the root problem is the reported raw device features I wonder if you could improve things (i.e. log entries and HomeKit complaining) by ignoring such null values?
Many thanks in advance for any assistance and your work on this plugin!
Mario.
<Log>
...
[15/07/2025, 17:21:13] [HomebridgeAlexaSmartHome] TV Ambilight ::: Raw device features: [
{
"name": "colorTemperature",
"instance": null,
"operations": [
{
"name": "setColorTemperature"
},
{
"name": "decreaseColorTemperature"
},
{
"name": "increaseColorTemperature"
}
],
"properties": [
{
"name": "colorTemperatureInKelvin",
"colorTemperatureInKelvinStateValue": null
}
],
"configuration": null
},
{
"name": "power",
"instance": null,
"operations": [
{
"name": "turnOn"
},
{
"name": "turnOff"
}
],
"properties": [
{
"name": "powerState",
"powerStateValue": "OFF"
}
],
"configuration": null
},
{
"name": "brightness",
"instance": null,
"operations": [
{
"name": "setBrightness"
},
{
"name": "adjustBrightness"
}
],
"properties": [
{
"name": "brightness",
"brightnessStateValue": 100
}
],
"configuration": null
},
{
"name": "connectivity",
"instance": null,
"operations": null,
"properties": [
{
"name": "reachability"
}
],
"configuration": null
},
{
"name": "color",
"instance": null,
"operations": [
{
"name": "setColor"
}
],
"properties": [
{
"name": "color",
"colorStateValue": {
"hue": 328.1879,
"saturation": 0.634,
"brightness": 0.9216
}
}
],
"configuration": null
},
{
"name": "endpointHealth",
"instance": null,
"operations": null,
"properties": null,
"configuration": null
}
]
...
[15/07/2025, 17:21:13] [HomebridgeAlexaSmartHome] Discovered 1 devices.
[15/07/2025, 17:21:13] [HomebridgeAlexaSmartHome] TV Ambilight ::: Attempting to add accessory(s) for device: {
"endpointId": "amzn1.alexa.endpoint.d2b0684d-afac-4597-b265-3955d6bcaf34",
"id": "d2b0684d-afac-4597-b265-3955d6bcaf34",
"displayName": "TV Ambilight",
"supportedOperations": [
"setColorTemperature",
"decreaseColorTemperature",
"increaseColorTemperature",
"turnOn",
"turnOff",
"setBrightness",
"adjustBrightness",
"setColor"
],
"enabled": true,
"deviceType": "LIGHT",
"serialNumber": "wiz-serial-number-41038595",
"model": "wiz-model-127615",
"manufacturer": "homebridge-alexa-smarthome"
}
[15/07/2025, 17:21:13] [HomebridgeAlexaSmartHome] TV Ambilight ::: Current state: [
{
"featureName": "power",
"name": "powerState",
"value": "OFF"
},
{
"featureName": "brightness",
"name": "brightness",
"value": 100
},
{
"featureName": "color",
"name": "color",
"value": {
"hue": 328.1879,
"saturation": 0.634,
"brightness": 0.9216
}
}
]
[15/07/2025, 17:21:14] [HomebridgeAlexaSmartHome] Querying for changes to TV Ambilight using query getPowerBrightnessColorColorTempStates
[15/07/2025, 17:21:14] [HomebridgeAlexaSmartHome] TV Ambilight - Get hue result: 328
[15/07/2025, 17:21:14] [HomebridgeAlexaSmartHome] Querying for changes to TV Ambilight using query getPowerBrightnessColorColorTempStates
[15/07/2025, 17:21:14] [HomebridgeAlexaSmartHome] TV Ambilight - Get saturation result: 63%
[15/07/2025, 17:21:15] [HomebridgeAlexaSmartHome] TV Ambilight - Get color temperature - InvalidResponse(State not available)
[15/07/2025, 17:21:15] [HomebridgeAlexaSmartHome] TV Ambilight - Service communication error
[15/07/2025, 17:21:15] [HomebridgeAlexaSmartHome] Obtained device state from cache
...
</Log>