Review on 🌡️ ORIA Wireless Refrigerator Thermometer with Indoor Outdoor Sensors - Audible Alarm, Min Max Record, Temperature Display for Home, Restaurants, Bars by Jessica Breaux

It's a little tricky to set up as there isn't really a guide or a "quick guide" but they do have a guide. The instructions don't seem to be a very good translation from Chinese. If you have a bit of technical flair, it's mostly easy. I am using it successfully with one sensor in the garage freezer and one in the kitchen freezer. There doesn't seem to be a problem with the signal through the wall about 15 feet away. I hope I never need the high temperature alarm and I hope when I do it does what I bought it for, keeping the freezer from losing frozen food!