Accu-Chek COMPACT PLUS User Manual page 164

If the temperature is between +6 and +10 °C or between +40 and
+44 °C, the meter will still allow you to perform a test. However, the
thermometer symbol will flash in the display.
Do not use results obtained while the thermometer symbol is
flashing as a basis for making therapeutic decisions. The
results may be incorrect. Incorrect results can cause the
wrong therapeutic decision to be taken and so produce
serious adverse health effects.
Tests cannot be performed at temperatures below +6 °C and above
+44 °C.
In this event the following message is displayed:
164
Measurement and storage conditions