TESTO 540 - Using the product; Switching the instrument on; Switching the display light on; Changing the parameter unit

Using the product 15
Using the product
To guarantee correct readings: Hold the instrument horizontally
so that the light sensor is directed upwards.
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Switching tthe iinstrument oon:
i Press .
- Measuring mode is opened.
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Switching tthe ddisplay llight oon:
 The instrument is switched on.
i Press .
- The display light goes out automatically if no key is
pressed for 10 seconds.
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Changing tthe pparameter uunit:
i Press until the desired unit appears.
Adjustable units
· lux
· ftc
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Changing tthe ddisplay vview:
Adjustable views
· Current reading
· Hold: Readings are held.
· Max: Maximum values since the instrument was last switched on or last reset.
· Min: Minimum values since the instrument was last switched on or last reset.
i Press several times until the desired view appears.
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Resetting MMax/Min vvalues:
1 Press several times until the desired view appears.
2 Press and hold until
---- appears.
3 Repeat steps 1 and 2 for all values that are to be reset.
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Switching tthe iinstrument ooff:
i Press and hold until the display goes out.
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