TESTO 540 Mode D'emploi page 14

Product description
14
Product description
At a glance
First steps
 Inserting batteries:
 Basic settings (configuration mode):
on@ITM.com
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.
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 appear on the display (configuration
mode).
- The adjustable function is displayed. The current setting
flashes.
2 Press ( ) several times until the desired setting flashes.
3 Press (
- The instrument changes to measuring mode.
www.





) to confirm the input.
Testo-Direct
Protection cap: Park position
Light sensor
Display
Control keys
Battery compartment (on rear)
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until
1.800.5