This is the one I have.
CDN TA20 Audio Visual Refrigerator Freezer Alarm
https://www.amazon.com/dp/B000I62FQI/ref=cm_sw_r_cp_api_glc_fabc_BHO0FbFBEJX9G?_encodin g=UTF8&psc=1
It’s only been 5 months so I don’t know yet how reliable it will be. I can hear it in the basement but in our house the freezer is directly below the kitchen.