Product Description; Display And Control Elements - TESTO 425 Instruction Manual

3.

Product description

This chapter provides an overview of the components of
the product and their functions.
3.1 Display and control
elements
Overview
Probe

Display

Control buttons

Battery compartment (rear)

Service compartment (rear)

Button functions
Button Functions
Switch instrument on;
switch instrument off (press and hold)
Switch display light on / off
Keep reading, display maximum/
minimum value
Open/leave configuration mode (press
and hold);
In configuration mode:
Confirm input
In configuration mode:
Increase value, select option
In configuration mode:
Reduce value, select option
Multi-point and timed mean calculation
Volumetric flow
3. Production description 21