These Freezer thermometer strips operating in the range -25°C to +1°C dimensions 100mm x 12mm The Liquid Crystal Thermometer Strip is a 100mm x 12 mm temperature sensitive self adhesive plastic strip with easy peel release paper and 5mm high easy to read numbers. The Thermometer Strip has the following temperature pockets -24 -21 -18 -15 -12 -9 -6 -3 0°C
When the temperature is 1°C below the pocket temp the digits are blue.
When the temperature is 1°C above the pocket temp the digits are brown.
Therefore this strip reads from -25 to +1°C
These thermometer strips are very sensitive and are best attached to metal shelf/draw fronts or in applications where they can be observed without opening the freezer door/draw e.g. Ice cream freezers, Clear fronted draws in domestic freezers etc