
If you don't know, you need Inkbird's IBS-TH2 temperature sensor! With this little device, an Android or iOS phone and 2 AAA batteries (not included) you can monitor the freezer temperature in real time and see a graph of the temperature variation over time. You can even set low and high temperature alarms so you can react before your frozen steak turns to slimy mush. The attached photo shows where to put the batteries and there is a small Phillips screwdriver in the box to open and close the battery compartment. The chart shows 2 weeks of data exported to Google Drive and then presented in Excel. Connect the device to the phone via Bluetooth and customize the settings as you like: name the device, read the output on C or F and set the storage. Interval and alarm settings according to your needs. I checked the output with another thermometer and found that I didn't need to use a calibration offset to get an accurate reading! The app even warns you when the sensors' batteries are low. Inkbird stands by its products. After the first device I ordered arrived with a problem in the battery compartment, another device was sent for replacement very quickly. I am very happy with all the Inkbird products I have purchased and this unit will come in very handy for temperature control in the freezer, fermenter, outdoors and in the garage all year round.

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