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TESTO Manuals
Humidity Gauges
635-2 Thermo-Hygrometer
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en
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??
??
²
Switching
t
t
he
i
i
nstrument
o
o
ff:
i
Press and hold
(for appr
ox. 2s) until the display goes out.
5.3
Display light
²
Switching
t
t
he
d
d
isplay
l
l
ight
o
o
n/off:
The instrument is switched on.
i
Press .
5. Operation
1
...
...
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