Thanks to the range of temperatures going from -30°C to +30°C, and to the accuracy to within a Celsius degree of this plastic thermometer to hang, you will be able to check the temperature of your fridge and freezer.
Plastic and derivated
In case of a hand-wash of your items in plastic and derivated plastic, use a soft and non-abrasive sponge or you will scuff the plastic and then pour out some washing-up liquid before to rinse with some hot water.
Unless otherwise indicated, you also can put plastic elements into a dishwasher by placing them in a such way that they do not clink together or along with ustensils and cutleries. You will, therefore, avoid the scuffs.
What you should not do : These products do not have to enter in contact with flames (BBQ, gaz stove...).
To avoid scuffing your derivated plastic (melamine, polycarbonate and acrylic), do not use sharpening ustensils or abrasive ustensils like abrasive sponge and steel wool.