Ferryman Stainless Steel Refrigerator Freezer Thermometer with High Low Temperature Alarm EASY TO READ: Large LCD Display Numbers, Toggle from Indoor Room to Refrigerator / Freezer Temperatures. TWO ALARM SETTINGS: High and Low Temperature Manually Set Alarms TEMPERATURE RANGE: -58 to 158F (-50 to 70C) with an Accuracy of +/- 2F THREE MOUNTING OPTIONS: Magnet, Key Hole or Flip Down Stand Comes with a Long Detachable Wire Sensor