TESTO 0554 1111 - Page 14

3 Description of the instrument
15
Connect temperature/humidity probe to the handle
1
Turn quick-release connector,
viewed from the handle end, through
90° anticlockwise until it locks in
place.
2
Insert probe head into the handle
(pay attention to coding).
3
Turn quick-release connector back
through 90° until it locks in place.

The temperature/humidity probe is ready to use.
3.8
CO
2
probe with Bluetooth
®
, including
temperature and humidity sensor (0632
1551)
Application
In conjunction with the testo 440, the CO
2
probe is used to determine CO
2
and
to measure humidity and temperature.
Structure
1
Probe head
2
Quick-release connector for
probe heads and adapter
3
LED status display
4
Button
5
Bluetooth
®
handle
6
Battery compartment (on rear)
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