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User Manual
Note
It is recommended that a fully charged spare battery is kept with
the thermometer at all times.
To preserve battery lifetime, the thermometer has the following power saving
features:
•
If the thermometer is in Menu Mode for over one minute without any
key being pressed, the display returns to Measure Mode.
•
If the thermometer is in Measure Mode for over two hours without any
key being pressed, the instrument is switched off.
4.2 Using an External Power Source
Although the Wahl DHS520/520B portable thermometer is designed to
be powered by an internal battery, it can be powered by a suitable external
power source (9 to 12V d.c./100mA rated).
Note
If the thermometer is to be used with an external power source,
ensure that the internal battery is removed before applying
external power.
To connect an external power source:
1)
Switch off the thermometer and remove the battery.
2)
Connect the external power source (9 to 12V d.c./100mA rated) to a
'HIROSE' connector (HR10-10P-12P). Connect the 'positive' to pin 5
and the '0V' to pin 7.
3)
Remove the rubber cover from the external connection socket, located
near the base of the thermometer (see Fig. 3, item 8).
4)
Connect the 'HIROSE' plug to the external connection socket.
5)
Switch the thermometer 'ON' and check for correct operation.
Wahl DHS520
Page 7
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