My wife was convinced the refrigerator was failing so I bought a few sensor tags from wirelesstag.net [1] just to be sure. You can certainly build your own using off-the-shelf IOT devices, but for ~$35 you can have a device that senses temperature, humidity, light levels,and runs for several months off an easily replaced cr2032. Although to be fair you must buy a base sensor station for $39 along with the first tag.
Having said that, it definitely gives me peace of mind knowing that my fridge isn't going out and that I haven't left the door open, either.
Next on the agenda is using my smart home controller to adjust cooling temperature on my window unit based on ambient temperature in my bedroom.
I looked at the product page for the wireless sensor and I saw this:
>No subscription fee of any kind for life; no monthly or annual fee to use cloud service and no cloud storage fee for data collected by sensor tags.
>High anonymity: only your account email address and tag manager IP address is collected
That sounds... slightly disturbing. It suggests the tags sends all the data to the manufacturer's server. That's bad from a privacy and reliability (eg. company goes bust in a few years) perspective.
Having said that, it definitely gives me peace of mind knowing that my fridge isn't going out and that I haven't left the door open, either.
Next on the agenda is using my smart home controller to adjust cooling temperature on my window unit based on ambient temperature in my bedroom.
https://store.wirelesstag.net/products/wireless-tag-als