AcuRite Digital Wireless Fridge and Freezer Thermometer with Alarm, Max/Min Temperature for Home and Restaurants (00515M) 4.25" x 3.75"

I noticed issues with Samsung app that cause the refrigerator to shut off when I closed the app. I finally delete the app and everything is working well. I reported in to Samsung tech support and they dismissed me. After losing food, I got one of these with an alarm. It safe me one more time.