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TESTO
Measuring Instruments
420
Startup Instruction
Page 5 (Safety and the environment)
TESTO 420 - Safety and the environment; Understanding the Manual
6 pages
Manual
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4 Switching Blue
tooth on/
off
5
3
Switching background illumination
on/off
1. Press
.
-
The background illuminati
on is switched on/off.
4
Switching Bluetooth on/off
1.
▲
Hold down for 3 seconds
-
Bluetooth is switched on/off.
4
6
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