Heathrow Scientific HEA28630 True North Freezer Digital Thermometer, Freezer Range 14.9 to -9.4 Degree F, -23 to -9.5 degree C, Refrigerator range 35.6 to 46.4 degree F, 2 to 8 degree C

Monitor temperatures inside your freezer or refrigerator with the added convenience of sound and flashing LED lights to alert out-of-range temperatures. Provided suction cup attaches the probe inside freezer/refrigerator while the thermometer secures to the outside with hook-and-loop tape. Convenient, large digital display shows freezer/refrigerator temperature plus ambient temperature. Handy switches toggle for freezer or refrigerator monitoring and degree F or degree C. Also includes one AAA battery. Probe cable measures 0.9m; probe measures 5mm OD by 17mm length. Set freezer range: 14.9 to -9.4 degree F (-9.5 to -23 degree C); set refrigerator range: 35.6 to 46.4 degree F (2 to 8 degree C). Unit measures 136mm length by 28mm width by 19mm height.