YoLink Weatherproof Temperature Sensor Starter Kit — SpeakerHub + 2 Sensors with Probe

Got them installed in my freezer and refrigerator works great. Freezer is outside in garage and no problem with signal

I've been using Bluetooth LE sensors from another vendor for years for monitoring, but have had endless problems with poor range and missing cloud notifications. I just switched to Yolink based on a coworker's recommendation, and this starter kit was fantastic! No range concerns with LoRa, and the tiny SpeakerHub lets me have spoken alerts in the kitchen without having to worry about a mobile app getting deauthenticated. I would recommend the Yolink kit to anyone!

So far so Good! Have an interesting application. It is the water main for an apartment complex, now above ground high up in the rocky mountains. It gets really cold for 6 months of the year and don't want pipes to freeze. Worried it wouldn't transmit through the metal box so got the wire attached probe to put inside the box. Wanted to put it all inside the metal box to protect it from the weather so tried that first.
It transmits right through the box to the Speaker hub in the office at least 100 feet away. Very happy to find a reasonable way to have this work without costing a small fortune$$

There are many simple loggers on the web market.
I chose the one from Yolink because it is simple and has sufficient functions.
The logger's battery level went down after two days in the freezer.
And, as far as I know, I was unable to check the log on my PC.
For that reason, I cannot give it another star.

I have placed the temp sensor and the speakerhub 725 feet apart. There are several large trees in the way and one double pane glass window. Despite this I am getting "Strong (-79dBm) signal strength. And it's currently operating in -20 degree Celsius. Very happy with this!