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1.1 Lockout Procedure
1. Turn the thermometer off.
2. Simultaneously press and hold the CAL
and the °C/°F keys down and momentarily
press the ON/OFF key. Continue to hold
the CAL and °C/°F keys for at least 5
seconds.
1.2 Re-Enable Procedure
1. Turn the thermometer off.
2. Simultaneously press and hold the
HOLD and the CAL keys down and
momentarily press the ON/OFF key.
Continue to hold the HOLD and CAL keys
until the display blanks.
