165X
Users Manual
8
No. Button Description
F 3 • RCD type (AC, DC, AC-S, or
DC-S).
• Memory RECALL.
G 4 • RCD test polarity (0, 180
degrees).
• Insulation test voltage (50, 100,
250, 500, or 1000 V).
• Memory CLEAR.
H O Turns the tester on and off. The
tester will also shut off automatically
is there is no activity for 10 minutes.
I A Turns the backlight on and off.
No. Button Description
J T Starts the selected test.
The T key is surrounded by a “touch
pad”. The touch pad measures the
potential between the operator and
the tester’s PE terminal. If you
exceed a 100 V threshold, the D
symbol above the touch pad is
illuminated.
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