TESTO 720 - Operation; Connecting a probe; Switching the instrument on;off

5. Operation26
5. Operation
This chapter describes the steps that have to be executed
frequently when using the product.
5.1 Connecting a probe
Plug-in probes
Plug-in probes must be connected before the measuring
instrument is switched on so that they are recognised by
the instrument.
i Insert the connector of the probe into the probe
socket.
5.2 Switching the instrument
on / off
²
Switching tthe iinstrument oon:
i Press .
- Measurement view is opened: The current reading
is displayed, or ----- lights up if no reading is
available.
²
Switching tthe iinstrument ooff:
i Press and hold (for approx. 2s) until the display
goes out.
5.3 Switching the display
light on / off
²
Switching tthe ddisplay llight oon/off:
 The instrument is switched on.
i Press .