Sper Scientific 800012 RH/Temperature Pen - Manual (Page 4)

MEASUREMENT PROCEDURES
4. The Max and Min data will be
reset when the unit is turned off.
Changing Temperature Scale
1. To switch from °C to °F or vice
versa, use a pointed tool (such as
a disassembled paper clip) to
poke straight (perpendicular to the
unit, not at an angle) into the
small hole located on the back of
the unit.
2. Press in (you will feel a button
push down inside the unit) until
the LCD display switches from °C
to °F or vice versa.
BATTERY REPLACEMENT
1. Turn the unit off by pressing A for 3 se-
conds.
2. Twist off the battery cover and replace with
one AAA 1.5V battery ensuring correct
polarity.
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