5 seconds; When you stop pressing the «START» button ② after
5 seconds, the current measurement scale («°C» or «°F» icon) will be
flashed on the display ⑪. Toggle the measurement scale between
°C and °F by pressing the «START» button ② again. When the
measurement scale has been chosen, wait for 5 seconds and the
unit will enter the ready for measuring mode automatically.
7. How to recall 12 readings in Memory Mode
This thermometer can recall the last 12 readings.
• Recall mode ⑫ : Press the «START» button ② to enter Recall
mode when power is off. The memory icon «M» flashes.
• Memories ⑬ : Press and release the «START» button ② con-
secutively to recall readings in succession, up to the last
12 readings. Pressing and releasing the «START» button ②
after the last 12 readings have been recalled will resume the
above sequence from reading 1.
8. Error Messages
• Measured temperature too high ⑭ : Displays «H» when
measured temperature higher than 42.2 °C or 108.0 °F.
• Measured temperature too low ⑮ : Displays «L» when mea-
sured temperature lower than 34.0 °C or 93.2 °F.
• Ambient temperature too high ⑯ : Displays «H» in conjunc-
tion with the «▲» when ambient temperature is higher than
40.0 °C or 104.0 °F.
• Ambient temperature too low ⑰ : Display «L» in conjunction
with the «▼» when ambient temperature is lower than 16.0 °C
or 60.8 °F.
• Error function display ⑱ : When system has malfunction.
• Blank display ⑲ : Please check if the battery has been loaded
correctly. Also check polarity (<+> and <->) of batteries.
• Dead battery indication ⑳ : If the steady battery icon is
the only symbol shown on the display, the batteries should be
replaced immediately.
9. Cleaning and Disinfecting
Use an alcohol swab or cotton tissue moistened with alcohol
(70% Isopropyl) to clean the thermometer casing and the measuring
probe. Ensure that no liquid enters the interior of the thermometer.
Never use abrasive cleaning agents, thinners or benzene for clean-
ing and never immerse the instrument in water or other cleaning
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