Testboy TB 55, Operating Instructions Manual

Page: 19 / 198

Operations
Testboy ® TB 55 19
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Self-test
Press the button briefly to
begin a self-test. All of the
Testboy TB 55's LEDs will il-
luminate and then go out. Only
a white and a green LED re-
main on.
1
Automatic power-off
The Testboy TB 55 features an automatic shut-off which acti-
vates after approximately 1 minute.
LED fluid illumination
The Testboy TB 55 has a special LED that can be used for illu-
minating the test probe and also for illuminating the fluid so that
dirt particles are visible.
This high-power LED can stay illuminated for up to 80 hours!
The LED has a life expectancy of over 100,000 hours.