If you are looking for recommendations for a refrigerator/freezer alarm, here are a few options to consider: AcuRite 00986M Refrigerator/Freezer Wireless Digital Thermometer: This wireless thermometer includes a display unit that can be placed outside of the refrigerator/freezer and a temperature sensor that can be placed inside. It alerts you if the temperature inside the unit goes above or below your preset range.La Crosse Technology 302-604R Indoor/Outdoor Digital Thermometer: This thermometer includes a wired temperature sensor that can be placed inside the refrigerator/freezer and a display unit that can be placed outside. It alerts you if the temperature inside the unit goes above or below your preset range.SensorPush Wireless Thermometer/Hygrometer: This wireless thermometer and hygrometer can be placed inside the refrigerator/freezer and connects to your smartphone via Bluetooth. It alerts you if the temperature or humidity inside the unit goes above or below your preset range.Refrigerator and Freezer Thermometer with Alarm by Home Acoustics: This thermometer includes a display unit that can be placed outside of the refrigerator/freezer and a temperature sensor that can be placed inside. It alerts you if the temperature inside the unit goes above or below your preset range and also includes an audible alarm.Taylor Precision Products Digital Refrigerator/Freezer Thermometer: This thermometer includes a display unit that can be placed outside of the refrigerator/freezer and a temperature sensor that can be placed inside. It alerts you if the temperature inside the unit goes above or below your preset range and also includes an audible alarm. So now, I also want to know if this facility is also available for the camping refrigerator as well.