
Contents
Safety and disposal.................................................................................. 5
1.1 About this document..............................................................................5
1.2 Security ..................................................................................................5
1.3 Warning notices .....................................................................................6
1.4 Disposal .................................................................................................7
Authorisations and certification................................................................ 7
Description of the instrument ................................................................... 7
3.1 Use.........................................................................................................7
3.2 Overview of testo 440 ............................................................................8
3.3 Display overview ....................................................................................9
3.4 Magnetic holder ...................................................................................10
3.5 Power supply .......................................................................................11
3.6 Probe overview ....................................................................................12
3.6.1 Compatible cable probes ......................................................12
3.6.2 Compatible Bluetooth®probes..............................................13
3.6.3 Compatible NTC probes........................................................13
3.6.4 Compatible Smart Probes .....................................................14
3.6.5 Compatible Pt100 probes......................................................14
Operation ............................................................................................... 15
4.1 Commissioning ....................................................................................15
4.2 Switching the testo 440 on/off .............................................................15
4.3 Making basic settings ..........................................................................16
4.3.1 Establishing a Bluetooth®connection ...................................17
4.3.2 Setting power options ...........................................................17
4.3.3 Setting the ambient conditions..............................................19
4.3.4 Configuring the unit system...................................................19
4.3.5 Setting the date and time ......................................................20
4.3.6 Setting the language..............................................................21
4.3.7 Showing general device information .....................................21
4.3.8 Humidity adjustment..............................................................22
4.3.9 Resetting the instrument or probe to default settings ...........23
4.4 Managing saved measurement data ....................................................23
4.4.1 Printing ..................................................................................26
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