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AC Clamp-on Meter Model CM 660 / CM 670 / CM 685
4.5 DC Voltage Measurement
Automatic measurement ranges: 4 to 600VDC (4 ranges)
• Turn the rotary switch to the range
• Insert the red lead to the red “+” input jack and the black lead to
the black "COM" input jack
• Take the voltage reading after it stabilizes
Warning:
“-----” indicates that the capacity has been exceeded.
The icon indicates reversal of the contact point’s polarity.