Geevon Refrigerator Thermometer, Digital Fridge and Freezer Temperature Alarm Gauge, Max Min for Accurate Temperature Monitoring, Ideal for Small Fridges and Beverage Coolers (CR2032 battery included)
£29.99There are corresponding channel setting buttons on both ends of the refrigerator thermometer, lightly press the channel button to enter the alarm setting mode, long press the alarm button to turn on/off the alarm setting, long press the menu button to enter the threshold setting. An alarm sounds when the set threshold value is exceeded