I am currently using 2 of the X3 T&H sensors to monitor 2 commercial fridges. These fridges are located inside our metal barn about 100 ft from our metal sided home. I get great signal strength. I tried using some Wifi T&H sensors but the metal siding on the barn and home seemed to act as faraday cages and I could barely get a signal. I added the Yolink sensors and hub to my Home Assistant setup and can now at a glance check the temperature history to make sure our eggs and milk are kept at the correct temperature. I definitely will be buying some more Yolink sensors in the future.
I've got two of these packs and I use them in my incubators, brooders and chicken coops...so far no failures and they have worked flawlessly. I'm about to get another 3-pack of the sensors.
Absolutely the best service and follow up one could on a product.