Getting To Know The Product; Connecting Probes; Switching The Instrument On And Off; Switching The Display Illumination On And Off - TESTO 545 Instruction Manual

6 First steps

Getting to know the product

Connecting probes

The required probes are permanently connected or integrated. It is not possible
to connect any additional sensors.

Switching the instrument on and off

Switching on
1
Press and hold down (2 sec) the

Measurement view is opened:
The current reading is displayed or
available.
Switching off
1
Press and hold down (2 sec) the

The display turns off.
Switching the display illumination on and
off
The measuring instrument is switched on.

1 Press and hold down (2 sec) the

The display illumination is switched on or off.
8
On/Off key.
----- lights up if no reading is
On/Off key.
MENU/ENTER key.