Peha, you are 100% correct. This is almost certainly a minor software change, that they could do in very short order. The sensor range is not the issue. They will be bog standard industry components that have a range well beyond what we need. They don’t even make these sensors with a narrow range. It’s almost certain that they use the same industry standard type, which ordinarily have a range of around -50C to +150C.
It’s accurate enough as well, as I can attest to from my own experience. As it happens, just today I checked the temperature at an unusual and remote location, and Alexa said it was 5C. It was an overcast day, so no sun to confuse the issue, and very calm and stable conditions, and in the middle of the day, so both inside and outside of my unheated remote site would have been stabilised, and equal.
I then checked all my inactive cameras, one by one, at this remote unheated spot, four of them, and all four said 5C. I then checked on the status of the batteries in my solar array, via a different device, and noted that the temperature read 4.97C. I then checked on the phone, which I use to communicate with all the devices at my remote site, and guess what, that said 5C as well.
The reason I did this is that I have been peeking in at the temperature readings, every now and then, just to see if they can be relied on, and so far, within normal ranges, -5C to +25C, they are good enough. Can’t comment on how they perform outside of those ranges, because those conditions would be rare here in the UK, other than to say I doubt they drift off by a long way, because again these are very well established standard components. As long as you calibrate it in the first place, it should be good enough.
Where there can be an issue is when the camera is in the sun, or when the camera has been active. This makes the reading far higher, but this won’t really matter if you just want to benefit from a low temperature alarm, because at some point you would get an extended period of inactivity, sufficient for the camera temperature to drop. I’d like to have an alert for -10C, although it isn’t really a big deal for me, because I could just get an SMS alert from a weather service for the location, since it’s an unheated and uninsulated building, so if it’s -10C outside it would be -10C inside, within a degree or so.
No idea why they do not fix this simple and glaring error, which, as has been mentioned by Joel, is more than likely a hangover from the internal cameras.
No one here is asking for extra features. The feature is already there, but it’s useless because of the range. It’s not up to others to tell us that it isn’t accurate enough, or I’m wasting my time. I can do my own research in this regard, and have done so. All it needs is a change in alert setting, because, for sure, it shows much lower temperatures than you can alert it for.