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Changing the battery
Press up on the clip and remove the
battery cover. Make sure you insert
the battery so that the polarity is
correct! Insert the new battery and
replace the battery cover.
Do not dispose of batteries in
normal household rubbish!
Use an authorised local
collection point!
Technical specifications
Display
Dimensions
Batteries
Protection degree
Measuring range
Testboy
TB 74
®
Optical / three LEDs
L = 160 mm / Ø = 33 mm
One 12-V, type V23
IP 40
0 – 400 µm
Operations
21
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