Here is another smart thermometer that lets you monitor the temperature of your freezer, lab samples, and equipment. The Thermote X comes with app connectivity. It has a temperature detection range of -148 to 275F. It has IP67 rated wireless sensors.
This smart thermometer is NIST traceable. It works with the Zynect app for iOS and Android. It is IFTTT friendly. You can find out more about it here.