Product Description; First Steps - TESTO 540 Instruction Manual

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Product description

14
Product description
At a glance

First steps

Inserting b b atteries:
1 To open the battery compartment, push the battery cover
down.
2 Insert batteries (2x 1.5 V type AAA). Observe the polarity!
3 To close the battery compartment, push the battery cover
back on.
Basic s s ettings ( ( configuration m m ode):
Adjustable functions
· Auto off function: OFF, ON (instrument switches off automatically if no key is
pressed for 10 minutes)
1 When switching the instrument on, press and hold
and
- The adjustable function is displayed. The current setting
flashes.
2 Press
3 Press
- The instrument changes to measuring mode.
appear on the display (configuration mode).
( ) several times until the desired setting flashes.
(
) to confirm the input.
Protection cap: Park position
Light sensor
Display
Control keys
Battery compartment (on rear)
until

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