Briidea Freezer Power Failure Alarm, Power Off Alarm with LED Indicators and Adjustable Alarm 80-120dB, Perfect for Monitoring Refrigerators, Freezers and

Briidea Power Failure Outage Alarm for Freezer, with LED Indicator Lights and 80-120dB Adjustable Alarm, Perfect for Monitoring Refrigerators, Freezers, and Sewage

GoveeLife WiFi Refrigerator Thermometer with Alarm, Wireless Digital Freezer Temperature Gauge with App Control, LCD Display, 2 Years Free Data Export, for Fridge Pool Hot Tub (Only Support 2.4G WiFi)

2 Pack Refrigerator Thermometer, -30~30°C/-20~80°F, Classic Fridge Analog Thermometer Large Dial with Red Indicator Thermometer for Freezer Refrigerator Cooler