C7 hub with a zooz 4-in-1. My basic rule that turns off lights in the morning spuriously turns them off long before the illuminance level is reached. My dashboard shows 100%, but the device is reporting 10% when i look at the device itself. This seems to happen about once a week. This is greatly reducing the WAF. (Wife acceptance factor)
The device itself doesn't display the illuminance, so I'm assuming you mean the device detail page, and this isn't what matches the Dashboard? If so, this seems more like a Dashboard problem. If you're using classic dashboards, maybe the websocket connection got lost so the page isn't refreshing on its own, and a refresh would fix it? An app only knows what the device reports, which the device detail page should always show accurately. I'd leave Dashboard out of the picture for a second if you are trying to troubleshoot that.
The "Events" page from the devcie detail page will give you an authoritative history. Besides logging for whatever app you're troubleshooting, that is also a good place to look. I suspect you'll be find there isn't really a problem. If there is, logs will be helpful to show what.
This device is also somewhat odd with lux reporting (it doesn't really do lux, just a percent of who-knows-what from 0-100 with a fairly narrow gamut before it maxes out; different drivers may handle this differently, including trying to convert to lux like the built-in, but you're still stuck with this range). That can be an issue, though it doesn't sound like yours...
So actually whether or not the dashboard value is accurate, the real problem is that my lights turned off even though it was "dark" and the illuminance value was far below my threshold. The device page dig indeed show a low value (10) while my threshold to turn off the lights was 90.
Yes I agree the value and measurement isn't great, but it "just" started acting flaky occasionally in the last 2 weeks. It's not repeatable, and I'm ready to change out the sensor for a zigbee sensor.
Enabling all logging for the app you're using and seeing what Logs, filtered to just this app, show for clues would be the best step to troubleshoot.
Agreed. I turned the logging on yesterday, now to wait for the next misbehaving event.